Experience Biosphere 2

Tour Schedule & Hours

Biosphere 2 is open every day of the year except Thanksgiving and Christmas. Under the Glass guided tours of Biosphere 2 are offered throughout the day on a first-come, first-serve basis. Biosphere 2 hours: 9:00 a.m. – 4:00 p.m., please arrive no later than 3:45 p.m. for the last tour of the day. 

Under the Glass tours include a short film on Biosphere 2, a guided visit to the Tropical Rainforest, Savanna, Ocean, Marsh, Desert, technosphere and Lung.  As the conclusion of the tour, visitor may explore the habitat and Ocean Gallery on their own. In the habitat visitor will see the Lunar Green House, upper Landscape Evolution Observatory, Former Biospherian Dining table, kitchen and living quarters. Exploring the Ocean Gallery is a must, where you can peer into million-gallon tank ocean tank.

See the tours page for information on our public tour offerings.

See the when you visit page for important information on tour policies and FAQs.

See the accessibility page for important information regarding mobility challenges or concerns about walking the one-mile tour route that includes 150 stairs.

For more information please contact (520) 621-4800 during business hours.