Connections Museum Seattle is open[science, tech & math]
The Connections Museum Seattle (formerly the Herbert H. Warrick Jr Museum of Communications) is a very special, little known, gem of a museum in Seattle. It tells the history of telecommunications technology through interactive exhibits and displays. There are working telephone switches that visually show how a call is routed and connected to the right location, they have displays of the outside phone equipment used to connect lines, old UNIX computers, and even working teletypes. The museum is free to visit, but they really would appreciate your donations to help them maintain it.