The Evoluon was a museum dedicated to science and technology, and the place of technology in society. It was closed for the public in 1989 and has not been re-opened as a public museum since. Watch the wonderfully 60s promotion (worth it just for the soundtrack). [via]
Dutch Submarines has mystery pictures of submarines and/or their doings with some great answers. For example, there is the story of the use of submarines as seaplane carriers yes, really.
Clara the rhinoceros. Hansken the elephant. Monster from the deep. Prints from the Rijksmuseum, Amsterdam [previously].