The Teyler Museum is the oldest museum in the world. It is a science museum that started as a state of the art Science Lab when Holland was still a top notch destination for scientists. Antony van Leeuwenhoek, Lorentz, Kamerlingh Onnes and even Newton al worked in this place. It one of my favorite museums and especially the huge batteries (Leidse Pots) and the famous Van der Graaff Generator.