Places gerardvanelzen Wants to Go

A 16th-century horror show built in a lovely Italian garden.

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

This picturesque Umbrian city has a subterranean side that has long remained hidden.

The oldest residential street in Europe also features an optical illusion.

Senators used to relax in the nearly forgotten marble tubs now hidden in the U.S. Capitol Building's basement.