Near the Lion Monument is a natural site that dumbfounded scientists when it was discovered in 1872. There’s a group of potholes that were formed during the last ice age 20,000 years ago.

And much older than these are the fossils of shellfish and palm fronds from when this spot was the shore of a subtropical sea some 20 million years ago.

These natural phenomena are complemented by new hands-on exhibits, as well as an 18th-century relief model of Switzerland.