Biosphere 2

The Biosphere 2 is quite a sight to see. If you take a tour, you'll get inside of it, and see how the biospherians lived (back in the 1990's). It's quite intriguing to see this environment that is completely separated from the rest of the world. This will be unlike any other tour you have ever taken and is quite educational. If you saw the movie Bio-Dome, this will definitely give you some flashbacks to it.

Make sure to get here early in the day, as the tours do fill up. You don't want to make the long trek here (about an hour from downtown Tucson) to find it sold out for the day.