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Questions tagged [cities]

For questions about cities, their systems and evolution.

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31 votes
6 answers
4k views

On the immediate effects of a small, short term black hole

What immediate effects would a small, short-term black hole have if it appeared in a residential backyard? How small or short-lived would it have to be to be survivable, if it is survivable at all? ...
MiraAstar's user avatar
  • 645
44 votes
10 answers
10k views

What happens to an empty, modern city?

Suppose you have a modern city in a temperate climate zone that empties. No people, or hardly anyone left, certainly not enough to keep all the infrastructure going. Our city is not below sea level (...
mart's user avatar
  • 3,487
17 votes
3 answers
2k views

What should architecture of an Imperial capital be like in order to accommodate differing people of differing sizes?

Basing off my previous question, in what way should the architecture be like in order to accommodate the many sizes of people and animal-people, assuming that the smallest could be as small as a few ...
grimmsdottir's user avatar
  • 6,247
41 votes
5 answers
6k views

How would an avian city be different from ours?

Imagine a city where the primary population is an avian race. Well assume for the sake of argument that these birdlike creatures have "hands" as well as wings which allows them to develop and use at ...
Liath's user avatar
  • 18.6k
45 votes
7 answers
13k views

What software is available for map creation?

I'm looking for recommendations for software to build my world, physically. I want to be able to create maps of the entire world and then drill down to individual areas and define the towns and ...
Styphon's user avatar
  • 3,405
15 votes
6 answers
4k views

Designing cities inside a hollowed-out asteroids

When I was a kid, I read an essay by Asimov describing an inside-out asteroid: (summary from Wikipedia) The Bubbleworld or Inside/Outside concept was originated by Dandridge M. Cole in 1964. The ...
JDługosz's user avatar
  • 69.6k
117 votes
11 answers
61k views

In a medieval setting, how far apart should towns be?

This is a medieval European (fantasy) setting, with the following (highly tentative) parameters: Each town is vaguely autonomous, and have their own municipal government system. Towns do trade with ...
ChrisBKreme's user avatar
  • 1,231
7 votes
2 answers
767 views

What is the sack-to-ship ratio?

In the world I'm building, the day lasts 9 of their years. This means that they are almost always on the move, living in blimp-like cities and houses. I've been designing these and I am having trouble ...
TrEs-2b's user avatar
  • 56.2k
40 votes
4 answers
32k views

How long would it take for a forest ecosystem to overtake New York City?

Deer bound across broken pavement, eating from bushes growing were there were once cars beneath trees where there were once light posts. Busses have been replaced by bears, rumbling slowly down ...
ckersch's user avatar
  • 46.4k
37 votes
14 answers
5k views

How can I ensure my cities don't all look the same?

I'm trying to create more opportunities for roleplay in a setting where most civilized cities are along the coastline of a "new world." Most cities are fortress cities on the frontier that serves to ...
satyesu's user avatar
  • 669
31 votes
14 answers
7k views

Just how unrealistic is a hovering city?

In my last question, we had some disagreement in the comments about the reality of a hovering city. However, that question wasn't about that. This one is. My civilization are building a giant ...
ArtOfCode's user avatar
  • 10.4k
17 votes
8 answers
884 views

Urban Planning in 3-Dimensions

So we have both flying cars and jetpacks. Presuming they each act like their counterparts (cars go as fast as cars, but in three dimensions; jetpacks are like cyclists), and that they are becoming ...
Mikey's user avatar
  • 17.4k
14 votes
6 answers
3k views

Is the location of major cities deterministic?

Let's take a look at the major cities of the world: Alpha++ London New York Alpha+ Tokyo Hong Kong Singapore Shanghai Sydney Dubai Beijing Paris I'll point out features for a few of these London: ...
Azor Ahai -him-'s user avatar
64 votes
18 answers
11k views

A city to last ten million years: Construction

In the future, a high-tech human civilization has colonised a distant planet. The planet is basically Earthlike in gravity, climate, terrain and vegetation. They want to build Forevertown: A city with ...
Royal Canadian Bandit's user avatar
57 votes
9 answers
9k views

What would the fortifications of an underwater city look like?

Merpeople, along with other similar underwater humanoids, are often depicted as living in great cities beneath the waves. These cities have many positive things going for them: plenty of real-estate, ...
ckersch's user avatar
  • 46.4k
37 votes
15 answers
14k views

What methods might an ancient civilization use to desalinate sea water?

Following on from my previous question here concerning the ancient civilization I have called the Androy and their struggle to survive terrible drought conditions on their planet. After years of ...
Slarty's user avatar
  • 37.6k
35 votes
22 answers
9k views

How would cities be designed that were threatened by dragons?

The dragons aren't all that common but they live in the nearby mountains and after a harsh winter are more likely to come looking for easy prey to fatten back up on. What are the major design ...
bowlturner's user avatar
  • 49.2k
34 votes
7 answers
6k views

What's the most logical shape for my city in space (space station)?

Science fiction shows us two common shapes for large space stations, rings and tubes: Deep Space 9 (image source): Similarly, 2001: A Space Odyssey (image source). On the other hand, we have ...
Monica Cellio's user avatar
20 votes
7 answers
2k views

How does one design a city meant for creatures of greatly varying sizes? [duplicate]

More specifically, given that you have to accommodate creatures that can be anything between 2 and 21 feet tall, and you want all these creatures to have accommodations such as inns or houses, and ...
Parson's Phone's user avatar
15 votes
4 answers
2k views

How to hide an underground city?

Related to my previous question : How to live in an underground city? The refugees managed to live in their underground city with the few resources they can find. They are prepared to fight if ...
Tyrabel's user avatar
  • 2,996
13 votes
6 answers
4k views

Would it be possible for a city floating on water to exist?

Is there any way that a town or city could exist that has interconnecting houses floating on a body of water? I once read in a novel about a small village like that in a swamp, and was wondering if a ...
Mike.C.Ford's user avatar
  • 7,859
13 votes
5 answers
1k views

How would a completely urbanized city-planet be maintained?

Based off of this deleted question: Why and how would a completely urbanized city-planet exist? Related: How would a completely urbanized city-planet support its population? How would the global ...
neph's user avatar
  • 3,362
12 votes
5 answers
3k views

Could a Megacity be a Penal Colony?

This question is inspired by a premise from the video game Batman: Arkham City, in which a portion of Gotham City has been closed down by the public to be reserved for prisoners from such places as ...
JohnWDailey's user avatar
  • 14.5k
12 votes
5 answers
3k views

Why would a complete urbanized city-planet exist?

Related: How would a completely urbanized city-planet support its population? How a completely urbanized city-planet be maintained? How would the global environment of a completely urbanized city-...
neph's user avatar
  • 3,362
11 votes
4 answers
2k views

Space wizards city : Is it sustainable?

Context Six thousand years ago, magic users from Earth managed to create a portal between Earth and another planet, far far away. This planet is Earth-like but developed no life forms whatsoever. ...
Babika Babaka's user avatar
11 votes
5 answers
1k views

How would a completely urbanized city-planet support its population?

Related: How would a completely urbanized city-planet be maintained? How would the global environment of a completely urbanized city-planet be affected? Why would a completely urbanized city-planet ...
neph's user avatar
  • 3,362
10 votes
3 answers
854 views

How would the global environment of a completely urbanized city-planet be affected?

Related: How would a completely urbanized city-planet support its population? How a completely urbanized city-planet be maintained? Why would a completely urbanized city-planet exist? The properties ...
neph's user avatar
  • 3,362
5 votes
3 answers
371 views

Using dead bodies for material 3: fuel

The world is suffering from the creatures of fantasy and nightmares which can appear with just a few minutes of warning anywhere, regardless of it being the middle of the street or on top of your bed ...
Demigan's user avatar
  • 45.4k
5 votes
7 answers
2k views

Getting large amounts of water to the Australian outback

I want to build a city in the desert outback. It needs drinkable water for its citizens, what's a few different ways to get it? (pipes from coastal areas, desalination of salt lakes, etc) What are ...
mateos's user avatar
  • 1,578
1 vote
1 answer
477 views

Megacity Shapes, Episode 3: Plumbing

I have an idea on how many people can work and live inside each of the three chosen shapes. I've received nothing on a reasonable cross-section of each shape. The third episode features an ...
JohnWDailey's user avatar
  • 14.5k
72 votes
20 answers
11k views

How do I drug a population in the most efficient way?

I want a whole city to be on drugs secretly, so they don´t know they are drugged by their government. The city is about 2 billion people and roughly structured like a Makropole from the Warhammer ...
Fulli's user avatar
  • 3,144
60 votes
15 answers
10k views

What circumstances could lead to city layout based on hexagons?

Most modern planned cities are based on grid layouts. Historic cities are more organic on a macroscopic level, but buildings are still generally square-shaped leading to grid-based layouts on the ...
Philipp's user avatar
  • 48.8k
42 votes
10 answers
11k views

What effects would a change in the nature of human sexuality have on society and infrastructure

Consider a group of humans at a bronze-age to early iron-age technological level colonizing a new earthlike planet. There is just one difference - there exists on the planet something which changes ...
Monty Wild's user avatar
  • 62.2k
31 votes
17 answers
6k views

What food production methods would allow a metropolis like New York to become self sufficient

In my overcrowded future setting the Hegemony (government of the Earth) wants to make the metropolises of the world self sufficient when it comes to food production. What farming/food production ...
Celestial Dragon Emperor's user avatar
27 votes
2 answers
2k views

What considerations does a city built on an oceanic platform have to make?

In a world without enough land for a massive (and growing) population but plenty of water surface, experimental cities have started to spring up along the edges of various continents. The first is a ...
Terri M.'s user avatar
  • 643
22 votes
4 answers
2k views

City in a hollow tree

As a tree grows new layers are added each year so that the trunk expands in radius. The living part of the tree is a relatively thin layer on the outside just beneath the bark, and the wood further ...
trichoplax is on Codidact now's user avatar
22 votes
2 answers
2k views

What are the Food sources for an underground city?

Let's assume a city exists underground, either in natural caves or synthetic tunnels. Are there any food sources underground, and what kind of population can they support?
droid's user avatar
  • 333
19 votes
6 answers
3k views

So we've survived the apocalypse. What's next?

The year is 2032. The location, rural midwest North America. A decade ago, a plague wiped out almost every living human. There weren't even enough survivors to bury the dead. Secondary plagues rose ...
Henry Taylor's user avatar
  • 69.2k
17 votes
6 answers
2k views

Would a medieval Arcology be possible?

In a barren desert, 5 cities called the desert pearls are placed like pearls on a string. Travel between the cities are done with huge pack animals who looks like a breed between elephant (mammoth) ...
Magic-Mouse's user avatar
  • 5,682
15 votes
6 answers
7k views

How to quarantine a major city?

We have an outbreak of a zombie-like disease in major metropolitan areas. The disease itself has a slow incubation period, and after a time it becomes clear that it is spreading faster than they can ...
MadPink's user avatar
  • 1,513
15 votes
8 answers
2k views

What is a better design for a floating ocean city - monolithic or a fleet of interconnected modules?

Assume that the city is about 1-3 kilometers in diameter, built with relatively futuristic technology, and there are no plans to expand it further (If the need arises, they'll just build a second one)....
Darth Biomech's user avatar
14 votes
3 answers
2k views

How to live in an underground city?

A group of refugees (around 50) fled enemies in a land full of rock. Fortunately they found exactly what they needed: a small river falling into a deep and tight gorge. There is a network of caves ...
Tyrabel's user avatar
  • 2,996
11 votes
3 answers
2k views

Cities in the trees

I'd like to tip my hat to this week's fortnightly challenge with this question. In a world I'm currently developing, I have a region that is dominated by trees that have developed a unique adaptation ...
Frostfyre's user avatar
  • 25.2k
8 votes
3 answers
1k views

Land Requirement for Island City

What would be the land requirement (in acres) for both farming and housing to sustain a society in this scenario: Small city of 1000 humans living on an island Medieval setting Mostly self-sufficient ...
Graeme Rock's user avatar
8 votes
4 answers
589 views

A city to last ten million years: Location

See A city to last ten million years: Construction for background. Second question: What would be the best choice of site on the planet's surface? Assume the planet is more or less Earthlike in its ...
Royal Canadian Bandit's user avatar
6 votes
6 answers
1k views

Cities of a civilization of sentients capable of natural flight?

We have a species, let's call them Aves Sapiens for now, which a winged creature that reaches an average height of 143 centimeters and can fly up to 300 km/h. (Assuming that the planet's gravity can ...
Martin L. Dark's user avatar
6 votes
4 answers
6k views

I want a big city in the desert, what conditions make it possible?

Starting condition: I know how small cities form. It is mostly a trade center that requires an access to water and food. But some cities have more than 100 000+ people. Climate: It is in the desert, ...
Vincent's user avatar
  • 16.8k
6 votes
2 answers
1k views

What is the highest pressure humans can live in in comfort?

These people inhabit an underwater city. In the city there are pools that connect the dry habitat with the outside ocean, this of course mean that the habitat is unpressurized and therefore the ...
SilverCookies's user avatar
6 votes
1 answer
508 views

A city to last ten million years: Maintenance

See A city to last ten million years: Construction for background. Third question on Forevertown: What are the key issues for maintaining the physical infrastructure of a low-tech city over ten ...
Royal Canadian Bandit's user avatar
4 votes
1 answer
499 views

Using dead bodies for material 4: ammunition

The world is suffering from the creatures of fantasy and nightmares which can appear with just a few minutes of warning anywhere, regardless of it being the middle of the street or on top of your bed ...
Demigan's user avatar
  • 45.4k