The Multihalle pavilion designed by Carlfried Mutschler, Joachim Langner, and Frei Otto for the 1975 Federal Garden Exhibition (“Bundesgartenschau”) was quickly dubbed the “miracle of Mannheim.” While a major initiative is currently underway to preserve the wood lattice gridshell structure that is pegged for demolition by the Mannheim city council, in 2016 another small architectural miracle occurred in the same...