A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

Few of the many visitors to this resort town know of its hidden Maya ruins.

One of Mexico's least-visited archaeological sites is tucked away inside a theme park.

A bright, colorful telling of the history of Mexico's youngest state.

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.

An ancient system of freshwater caves filled with animal bones, including that of species long-extinct.

This futuristic public park includes large sculptures and an artificial geyser.

This exacting restaurant will charge a fine for every grain of rice you've left behind.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the first ‘Harry Potter’ film.

It’s not hard to see why the historic Peabody Conservatory of Music’s library has been described as a “cathedral of books.”

The whole world in one water tank.

The hidden ruins of a mill that is linked to an attempt to assassinate the vice president of the United States.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

Ring the bell to enter a bar that looks equal parts museum and old curiosity shop.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

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

Wallabies live naturally on this Irish island.

Though they've since been renamed, these two streets hint at Dublin's darker days.

This 30-foot pile of rocks may be the grave of a mythological Irish queen.

Huge standing stones mark a site of megalithic mystery.