The incorrupt tongue of the patron saint of lost things is venerated in this basilica.

Baroque celebration of the end of the Great Plague of Vienna.

Dine amidst exotic plants at this former royal greenhouse.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

The final resting place for the remains of 143 Habsburg royalty.

Centuries ago, red and white wine poured from the statue's breasts whenever a new Venetian ruler was elected.

The first modernist church in Europe.

Sealing couples' love since just after World War I.

Stone age urban planning.

A misnamed well, with a deep dark past.

Nikola Tesla's ashes are held in a golden sphere, surrounded by his works.

This 15th-century Serbian Orthodox monastery also contained a school for illuminating manuscripts.

Italian poet Dante Alighieri is entombed in this small mausoleum in Ravenna, and his hometown of Florence has never been too happy about it.

Southern Italy's spinning top village.

Built to repay the sins of the father, this church is home to one of the most valuable works of Western art.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

A fairytale-like medieval church perched atop a rocky cliff on Italy's "Coast of the Gods."

Filled with goldfish swimming in a shallow pool of sea water, this ancient crypt is more wishing well than burial site.

This 6th-century church has the largest and best-preserved collection of Byzantine mosaics outside Constantinople.

Elaborate tile work in this railway station tells the story of Portugal.

This medieval tower is all that remains of the castle where Joan of Arc was held before being burned at the stake.

This triumphal arch celebrating the Sun King's conquest of Lille is a masterpiece of military architecture.

Balconies that have a most unusual accent.

An ancient ossuary in Rouen.