Experience Biosphere 2

Tour Schedule & Hours

Guided tours are the only way to experience Biosphere 2. We are open every day of the year except Thanksgiving and Christmas. Biosphere 2 Visitors Center and exhibit area open daily at 9am. 

Our one hour and 20 minute tours are offered everyday beginning at 9:30am on weekends and holidays and 9:45 am during the week. The last tour of the day begins at 4:15. It is recommended that you arrive no later than 3:45pm. Upon arrival you will be assigned to the next available public tour.

See the tours page for information on our public tour.

See the when you visit page for important information on tour policies and FAQ’s.

See the accessibility page for important information if you have a mobility impairment or cannot walk the one-mile tour route that includes 150 stairs.