Dating back to the second century, vestiges of prehispanic mural paintings are found in this underground palace.

This art shopping center still boasts pieces of its past as a textile factory.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Every equinox this Maya pyramid puts on a spooky ancient light show.

Once home to an aristocratic family and a workers' organization, this intricately tiled building now houses a chain restaurant.

Frida Kahlo's childhood home, now a museum of her life and works.

This small island, a byproduct of 19th-century canal construction, is now home to a charming Japanese garden.

This submersible road connecting a French island to the mainland is lined with safety towers for when the tide strands travelers.

Ancient paintings known as the "Sistine Chapel of Cave Art."

The ship built to ferry passengers and goods to the doomed Titanic is now the last remaining White Star Line vessel.

For part of the year, this innovative greenhouse is painted white to keep the plants from getting scorched.

A museum marks and documents the site of the Titanic's launch.

It was once nicknamed "the most bombed hotel in Europe."

Step into Narnia at this small park featuring statues from "The Lion, the Witch, and the Wardrobe."

This ancient Irish tower could easily have stood in for Rapunzel's prison.

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

The beams of the New College, Oxford dining hall come with an amazing story.

These red marks, seemingly placed at random, are in fact not.

A magical, macabre wax museum, beloved by locals, uses real artifacts to depict an assassination from the French Revolution.

One of the largest ochre quarries in the world, hidden in a limestone landscape.

The great Italian Renaissance painter was laid to rest here in the Chapel of Saint-Hubert.

An aluminum skeleton brings Chinese mythology to the French shore.