Natur-Museum Luzern. There is this terrific exhibit at the Natural History Museum. It’s in the attic of the building and is designed to look like a bank vault with lots and lots of safety deposit boxes along the walls. Everyone has a special paper key and you slide it into the slot (kinda like if you were getting into your hotel room with the plastic credit card key) and an aluminum door slides open and this is what you see. Each box has a different bug species and we spent the time going from key slot to key slot to see what was pinned up behind the doors.