Attilan is the city and home of the Inhumans.
Attilan was originally built from the remnants of Kree outposts on Earth. Over time, Attilan was later relocated to the Moon as Earth's pollution became hazardous to the Inhumans. The is self-sufficient, growing its own food within the outskirts of the city's dome and nourished by means of irrigation and artificial sunlight. In the event that Attilan is on short supply, the Inhumans trade what they needed from S.H.I.E.L.D..