A treasure trove of Renaissance-era funerary art in a Roman church built on top of Nero's grave.

Jesus' footprints and the first catacombs in the world.

Stripes of human ashes cover a back lawn in the most sought-after burial grounds in Paris.

Former hunting lodge of a duke who was an avid collector of impressionist works.

The headless bodies of more than 1,300 guillotined victims of the Reign of Terror are buried here in mass graves.

A popular shrine where the Blessed Virgin allegedly appeared in 1830, displaying a holy armchair and two incorruptible remains of Lady Saints.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

France's most famous cemetery, with some of its most curious tombs.

One of the greatest heroes of the Titanic tragedy came from humble beginnings to this beautiful home.

Here lies Lilly E. Gray, an alleged "victim of the beast," but the reason long remained a mystery.

Visitors to this library are in for a real-world education in modernist architecture.

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

This spooky statue sits outside a famous Prague theater.

A mocking tribute to the past and modern leadership of Prague.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

This restaurant's specialty is "a major enigma for food historians."

This astronomical clock is the second oldest in England.

The oldest residential street in Europe also features an optical illusion.

The small first-floor apartment where the author wrote her Pulitzer Prize-winning book 'Gone with the Wind.'

World's largest magnetic research facility.

Washington D.C.'s most famous pianist, composer, and bandleader still tickles the ivories outside Howard Theater.

A tribute to the pop culture icon overlooks this Washington D.C. intersection.

Through the decades, Black music stars have performed at this historic hub for music and the arts.