A few years ago, Seattle artist Claire Cowie made a chandelier of two-sided paintings: Each painting portrayed two versions of someone who had died, one on each side, both different because both were painted from memory. Deborah Aschheim has done something similar with architecture, creating a whole ghost city of memory inside Suyama Space. Buildings hang on strings from the ceiling and sprout from the walls, and they look vaguely familiar in their details—angles and sweeps and thrusts and curves—but none of them quite adds up to a replica of a real building in the world. (Suyama Space, 2324 Second Ave, suyamaspace.org, 9 am–5 pm, free)