San Francisco's oldest surviving monument and meeting place for 1906 survivors.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

Beyond the usual stories that attend old prisons, this one has deep bloody undercurrents.

Watch butterflies take flight before you fly.

The busy transport hub is home to the tallest airport slide in the world.

Crawl through the hole in the middle of this stone to break off a bad relationship or initiate a good one.

There is only one place in the world where the corners of four nations come together.

These Egyptian statues have survived for 3,400 years and were an acoustic wonder of the ancient world.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

This African beach is home to thousands of rare mainland penguins that are known for their annoying voice.

Haven for Cape Fur Seals, until the Ring of Death of jumping Great White Sharks arrives.

The ancient heart of Tunis is an enormous maze of narrow streets and alleyways.

An ancient Phoenician citadel once stood at the site where Queen Dido first landed, according to legend.

A tropical paradise once home to space exploration and military installations.

Once a strategically imperative naval base, portions of this Bermuda dock complex now serve cruise ships.

Storms, funding, and in-fighting have kept this Bermuda church from ever being completed.

The world's highest and most dangerous infinity pool lies at the precipice of Victoria Falls.

The capital of the Cayman Islands is a center of offshore banking, but gets battered by blistering hurricanes.

Collection of fossils, plants, and ancient animals encased in amber.

Once a favorite playground for the world's most illustrious guests, Hotel Nacional's secret weapons and bunkers reveal a more menacing side to its golden history.

A remarkable range of flora and fauna are represented in this Dominican nature preserve.

The oldest colonial fortress in the Americas was once the home and later prison of Christopher Columbus.

Built in 1512, the oldest cathedral in the Americas.

After Christopher Columbus died, his son built a fancy house to rule from.