A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

These ruins of a pre-Columbian cliff village are among the most beautiful and well preserved in New Mexico.

A top secret Cold War bunker hidden beneath a Latvian spa facility is now open for tours.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

The 20th-century archaeologist was interred among the ruins of an ancient Roman city.

This exceptionally well-preserved ancient marvel also houses a small museum dedicated to Jordanian folk tradition.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.