A regular looking rock with an unbelievable history.

Don't blink or you'll miss it.

One of the last free public hot springs is decorated with hippie art.

A volcanic tunnel illuminated by natural skylights offers a shaded respite from the desert sun.

Abandoned bridge hidden deep in the San Gabriel Mountains.

Ruins of a German Castle on top of a towering stone pillar.

The ruins of this Dutch castle sit atop a labyrinth of once-secret tunnels and passageways, dating back over 900 years.

One of the oldest and certainly best preserved Cistercian abbeys still in existence.

Housed in an old church, this hunting museum holds a collection of mythical bird-rabbit creatures.

This extremely narrow tenement boasts a maximum occupancy of just two.