This is HI-SEAS, Hawaii Space Exploration Analog and Simulation, a white dome situated on the top of Mauna Loa on the Big Island of Hawaii. It's used to help prepare would-be astronauts for life on the moon or Mars.
This is the other side of the airlock that you see from the inside of the habitat. To the left is a bulky traditional spacesuit model that has been worn as a prop on previous missions.
A view of the workstations on the ground floor. They're used by astronauts to log experiments or communicate with the outside world and Mission Control. Messages are generally delayed anywhere from a few seconds to over 20 minutes to simulate the actual delay from the moon or Mars.
A TV and some exercise equipment for astronauts to work out are found on the ground floor next to the workstations. There's also a single window to let light in and so they can see outside.
Everything from food to water is rationed, so astronauts only get 8 minutes of shower time per week. This sheet and stopwatch helps them keep track of how much they have used so far.
Although these modified boiler suits aren't really what astronauts would wear on the moon or the red planet, they're still close enough to make you feel like you're really suiting up for space.
