Montreal Biosphère was designed by Buckminster Fuller for the USA pavilion at the 1967 World Fair Expo in Montreal, Canada. The building originally formed an enclosed structure of steel and acrylic cells, 76 metres (250 ft) in diameter and 62 metres (200 ft) high. During structural renovations in May 1976, a fire burned away the building’s transparent acrylic bubble, but the steel lattice remained. Today, the Biosphère is a museum in Montreal dedicated to environment.
Conceived by Fuller in the late 1920's, the Dymaxion House was not built until 1945. Planned as affordable housing for veterans after WWII, they never took off and this is the only complete house remaining. It currently resides at the Henry Ford Museum in Dearborn, MI. I've seen it several times and this alone makes it worth the trip!