Experience Biosphere 2

Tour Schedule & Hours

We offer tours daily from 9:30 a.m. to 4:00 p.m. We ask that you arrive no later than 3:45 p.m. for the last tour of the day. Our tours currently depart every 30-45 minutes. 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

Holiday Schedule

December 22 9 AM – 4 PM
December 23 9 AM – 4 PM
December 24 9 AM – 2 PM
December 25 Closed
December 26 9 AM – 4 PM
December 27 9 AM – 4 PM
December 28 9 AM – 4 PM
December 29 9 AM – 4 PM
December 30 9 AM – 4 PM
December 31 9 AM – 4 PM
January 1 9 AM – 4 PM
January 2 9 AM – 4 PM
January 3 9 AM – 4 PM