isakbiwer's User Profile - Atlas Obscura
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Oracle, Arizona

Biosphere 2

A reproduction of earth's many biomes.
Tre Added by Tre
Flagstaff, Arizona

Lowell Observatory

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.
Trevor Added by Trevor
Phoenix, Arizona

Camelback Mountain

A geological mystery on Camelback Mountain.
rxallen Added by rxallen