Experience Biosphere 2

When You Visit

What to Expect:

The Biosphere 2 under the glass tour consists of:

  • 1 hour and 15-minute tour
  • Approximately 150 stairs, both up and down
  • Approximately 1-mile route to walk
  • 10-minute walk to and from the Visitor Center
  • Considerable time standing
  • Indoor and outdoor

The under-the-glass walking tour of Biosphere 2 consists of approximately 150 stairs (up and down) and the route is just under one mile to walk round-trip. The tour duration is 1 hour and 15 minutes with a considerable amount of standing . The tour spends time outside as well as inside the Biosphere 2 research facility itself.  Comfortable, closed-toed shoes are highly recommended as the tour route includes standing, climbing and walking.  The interior of the Biosphere 2 research facility is heated and cooled based on current research protocols and as a result visitors may experience a variety of heat and humidity conditions on the under-the-glass guided tour. Bottled water is allowed on the tour and encouraged. Visitors who have medical considerations, special needs, are non-ambulatory or have other conditions may want to arrange for a less rigorous tour, please see ACCESSIBILITY.  There are also self-guided exhibits and movies which take approximately another hour to view. Visitors should plan to spend about 2 to 2.5 hours at Biosphere 2.

Tour Rules:

To ensure the enjoyment and safety of visitors and to provide for the preservation of current research taking place at Biosphere 2 the following rules apply:

  • Reservations

    Tours are limited to 40 visitors per tour.  We do not accept reservations except for school and group tours and for those who need to arrange for a less rigorous tour.  See our Accessibility page for more information on scheduling a modified tour.

  • Walkers, Wheelchairs, Mobility Scooters and Strollers

    Because of the number of stairs and steep terrain wheelchairs, walkers, mobility scooters and strollers are not permitted on the tours. Due to low ceilings and doorways child-carrier backpacks are not permitted on the tour. Front carrying and front slings are allowed.

  • Food & Beverage

    Due to current, on-going research taking place inside Biosphere 2 food and beverages are prohibited on the under the glass tour, with the exception of bottles water which is encouraged. The B2 Café offers a selection of lunch and snack items.

  • Cell Phones

    In order to prevent disruption to other visitors, the use of cell phones is prohibited during tours. Cell phones may be used to take photographs on tour.  The use of selfie sticks is prohibited.

  • Pets and Service Animals

    Pets are not allowed inside Biosphere 2 or on the grounds, service animals that are trained to do a specific task are welcome. 

Following these rules will ensure the maximum enjoyment and safety for all visitors. Prepare for your visit by reserving your tickets today.