This famous geodesic sphere, designed by Buckminster Fuller for Expo '67, is truly an engineering and architectural marvel. It has survived one fire and a couple of freezes, and has housed, at one time and another over the years, several attractions. Currently, it's home to a rather lackluster environmental museum, but if you're interested in seeing the sphere up close, buying tickets to the museum is the only way to do that. The lobby of the environmental museum does include information about Buckminster Fuller and the history of the sphere (in English and in French) and you can take the museum's elevator to the top floor to a glassed-in observation platform where you can get a closer look at the sphere, as well as see views of the city for miles around. One floor down from this space, there's an open deck called a belvedere, where you can hang out inside the sphere. The belvedere is closed in the winter, due to potential slipping hazards -- we were there in February, and there was snow and slush over much of the belvedere. I think we were at the site for only about half an hour, as we skipped much of the environmental museum. The Biosphere itself is very cool, and worth the price of museum admission if you're an architecture geek.

Absolute waste of time and money. Nothing to do there. The most interesting activity (VR experience) would be an additional $30. No food, concessions, or even vending machines. Parking area has very limited spaces. The place is literally a shell of its former self (see May 1976 fire).

The steel net grabbed my attention. The exhibition was great with a lot of educational purposes about the protection of the environment. I think this museum is more for kids than adults. One thing that can be improved is the access on the top of the building, where some parts are closed due to the malfunction of the stairways, but great experience overall.

The Biosphere structure is nice and the people at the entrance helpful. First part is like a testlab and very interesting for children and adults. It explains with a questionnaire all toxics and bacteria the impact on peoples health and environment etc. Next room is about snow geese also nice and interesting. Third room is about an artist who well known and creates his art with the help off spray paint. I don’t mind his art but totally do not get it that his art is included in the Biosphere and environmental museum. I don’t understand the promotion of an anti environmental way of art at this place.

The Biosphere is located in a large, lovely park with walking and bike trails. You can see the structure from the ground level without entering the museum. The acrylic covering burned off years ago; just the done itself and interior buildings exist. The museum itself could use a good curator; it’s a massive waste of space with on-the-nose environmental messaging and elementary science concepts. Was hoping to learn more about the biosphere project (and others like it), but most of this is in the ground level lobby. You are able to climb to third floor and take pictures of the city skyline (obscured by the dome, of course) but it is not at all worth the steep price of admission.