The University of Arizona

Tour Schedule

We offer tours daily from 9:30 a.m. - 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 are currently departing every 30-45 minutes* (*PLEASE NOTE:  the time between tours is subject to seasonal variability - please call for the day's schedule).  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.

Contact:  520-838-6200