World's Largest Trellis

On a recent trip to Montreal, I returned to an Expo 67 icon now reincarnated as The Biosphere. Designed by Buckminster Fuller, it was one of the biggest attractions at the fair. Now, it is a site devoted to environmental action and as a showcase for studying water and the local ecosystem. Based on the bottom photo it may eventually become the world's largest trellis!

Built from triangles, which Buckminster Fuller considered the perfect form, the Biosphère is the synthesis of his entire process: he demonstrated that it was possible to create a liveable space using only one-fiftieth of the materials normally used in a conventional architectural design.

Definitely worth a stop if you're anywhere close.