Experience Biosphere 2
Tour Schedule & Hours
We offer tours daily until 4:00 p.m. We ask that you arrive no later than 3:45 p.m. for the last tour of the day. It is NOT necessary to book a reservation for groups with 20 people or less. Upon arrival you will be assigned to the next available general tour.
Biosphere 2’s gates open daily at 9:00 a.m. and close daily at 4:00 p.m. Biosphere 2 is only Closed Thanksgiving Day and Christmas Day. Contact: 520-838-6200