Architect David Kemnitzer spent decades collecting paper models of castles, nuclear power plants, modernist houses, farms, and skyscrapers, starting from his childhood in the 1940s. But he never assembled the 4,500 pieces he donated to the National Building Museum between 2013 and 2016. So before a display of the miniature architecture could be installed, museum staff, architecture students, and volunteers all pitched in to carefully construct color copies of selected models, with the more elaborate examples taking weeks to erect with scissors, glue, and razor blades. ... As curator Sarah Leavitt, who organized Around the World in 80 Paper Modelsexplained to Hyperallergic, the time making the models “does give you this connection to the structure you’re building.”