An abandoned whaling station on an active volcano offers hot springs in Antarctica, surrounded by ruined giants of industry.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

New Zealand's epic shrine to all things puzzling.

Moonbows over Kentucky.

This restored eighth-century palace is a shining example of ancient Umayyad architecture.

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

Quite simply the largest tree in the world (by volume).

A mysterious ancient cemetery with Roman sarcophagi and Lycian inscriptions.

Hidden just under the waters around this Turkish island are the ruins of a once great city.

Roman ruins, natural methane fires and a lovely beach.

Flames have been burning within this mountain for more than 2,500 years.

Come face to face with the ferocious visage of the serpent-headed mother goddess of the Aztecs.

Iconic red and white plaques show the creative names invented to navigate the city streets.

This ancient jade mask depicting the Zapotec bat god was found in the ruins of the pyramids of Monte Alban.

Half-hidden by grassy slopes, this striking Spanish colonial fort is now a museum of underwater archaeology.

Monkeys inhabit the lush forest surrounding ancient Mayan ruins once considered sacred.

These roaring primates were considered a divine creature in the cosmology of the Maya.

Deep in the Guatemalan jungle stands an ancient pyramid that once marked the reign of a king.

An amazing collection of fantastic reptiles, amphibians, spiders, and insects.

An "anarchical" no man's land, complete with garbage sculptures and a hobo-run "Landfillian Library."

The former house of an anthropologist couple displays Lacandón Maya artifacts in a homey atmosphere.

This bewitching Babylonian goddess haunts a hallway of the British Museum.

These circular ruins are all that remain of a 17th-century Arctic whaling outpost.

This abandoned NASA launch site is now a memorial to a trio of astronauts who were killed there.