"Frei Otto’s Olympic Stadium, Germany, early-1970s. Otto was the…

"Frei Otto’s Olympic Stadium, Germany, early-1970s. Otto was the pioneer of tensile, tent-like structures, which have had limited application up to now, but may have a much bigger future in a world that values lightness, transparency, and transience."

https://lebbeuswoods.wordpress.com/2009/12/02/big-tops/