Nasa... City of humans in Moon

NASA plans to build a moon base that will serve as a visitor center, laboratory and stepping stone to Mars.
NASA will begin testing a two-room, inflatable building that will be a model for its planned base on the moon. It is the first generation of a building that eventually will be bustling with activities when astronauts are visiting but will be durable enough to last long periods of inactivity.

The lunar habitat currently being tested at Langley Research Center has a diameter of about 12 feet. Many rebuilds and modifications are expected before the first buildings are actually used on the moon around 2020. The next phase will be to study rigid vs. inflatable structures.

The city might be like this

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