This small chapel is built of human bones and decorated with a golden skeleton.

This "preacher's pulpit" once used for pagan ritual, is home to a new, and dangerous ritual.

Giant, friendly pelicans in Central London, the most unlikely of places.

Jesus' footprints and the first catacombs in the world.

A tribute to Ponce de Leon's supposed quest for eternal youth.

Go inside to really appreciate this 500-year-old technological masterpiece.

A tree-like building perches on its trunk in the Steglitz neighborhood of Berlin.

This replica of the Greek structure is in the heart of Nashville.

Science fiction's grandfather has a fittingly marvelous tomb.

The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.

This "floating railway" is one of the world's oldest monorail systems.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

Europe's second largest ossuary wasn't discovered until 2001.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

Arrr! The most authentic collection of pirate artifacts in the world... matey.

An abandoned set from the 1980 film "Popeye," claimed and repurposed as a theme park by creative locals.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

Berlin's natural history museum houses the world's largest mounted dinosaur and the late beloved polar bear Knut.

Mirrors and glass shards cover every inch of this arrestingly beautiful mosque.

Soaring over 6,000 feet in the Bavarian Alps, this beer garden was once Hitler's 50th birthday present.

Lavish royal estate punctuated with heated greenhouses.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Scattered throughout London are ancient remnants of the city's former bounding wall.

Copenhagen's celebrated theme park and gardens.