BILL AND MELINDA GATES FOUNDATION VISITOR CENTER 440 FIFTH AVENUE NORTH SEATTLE WA 98109 MUSEUM OF FLIGHT 9404 EAST MARGINAL WAY SOUTH SEATTLE WA 98108-4097 THEODOR JACOBSEN OBSERVATORY 4324 MEMORIAL WAY NE SEATTLE WA 98195 UNIVERSITY OF WASHINGTON PLANETARIUM 1400 NE CAMPUS PARKWAY SEATTLE WA 98...