One of several skulls claiming to belong to the beheaded St. John the Baptist is on display at this Roman church.

This large, circular tomb is the final resting place of the first emperor of Rome.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

In one of the world's smallest countries, a royal's personal winery is open to the public.

Featuring a meatless buffet fit for kings, this family-owned Zurich eatery is considered the oldest vegetarian restaurant in the West.

These waste baskets play a few risque messages to discourage littering.

This 16th-century house tells the city's history through old artifacts and quirky tales.

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

You may get stranded and everyone's peeing in the water, but at least there's cocktails!

A small collection of iguana-infested ruins hides amid Cancún's bustling hotel zone.

Its columns were all carved from the same white oak tree.

The fairy tale castle of the "fairy-tale king."

One hundred years ago this small house in downtown Zürich became the birthplace of the Dada movement.

Copenhagen's celebrated theme park and gardens.

This demon atop the Notre-Dame de Paris looks utterly bored.

The castle still holds traces of the abandoned Roman fort it was built atop.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

This ancient market is often referred to as the oldest shopping mall in the world.

A sculpture serving as an homage to Pope John Paul II.

This classic steam-powered train takes tourists on a nostalgic trip around the Connecticut River Valley.

One of America's first spies started out as a teacher in this little red one-room schoolhouse.

The first commercial nuclear power plant constructed on Long Island.

The final resting place of a circus performer who went by the pseudonym "General Tom Thumb."

This strangely amalgamated museum explores the history of the Timex clock company as well as archaeology.