If there were no Japan, there’d be a hole in architecture the size of a rising sun. Through July 4, an exhibit at New York’s Museum of Modern Art, “A Japanese Constellation: Toyo Ito, SANAA, and Beyond,” celebrates that country’s contributions. You’ll see how three generations of Japanese pros influenced contemporary architecture with innovations and the use of transparent and lightweight materials. Forty-four projects from Toyo Ito, Kazuyo Sejima, Ryue Nishizawa, Sou Fujimoto, Akihisa Hirata and Junya Ishigami are presented in models, drawings and projected slide shows. Learn more at moma.org.