If you're interested in fossils, minerals, scientific instruments, and paintings, this is the place to visit.. Oldest museum in the Netherlands, opened in 1784. Napoleon visited here in 1811 to see the largest electrostatic generator ever produced. Unfortunately it's not working anymore. Einstein visited here in 1911. Only fun things are the fluorescent minerals and the magicians' cabinet. Only museum in the world with authentic 18th century interior.
Unfortunately I had not the time to visit the inside