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

This former Roman Catholic Church still contains the embalmed hearts and organs of 22 popes.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

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

Once a 19th-century brasserie, this McDonald's exterior celebrates Alsatian design and the "King of Beer."

The celebrated eyesore created by starry-eyed sweethearts.

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

The video game-themed street art first popped up in the French city.

This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.

A book bound in the skin of an infamous criminal, along with countless other specimens.

The Lone Star plaque hangs in a bombed-out bunker in Normandy to honor a Texan colonel's heroic actions on D-Day.

An effigy of a trapped paratrooper dangles from a Normandy church to commemorate one remarkable D-Day event.

This obscene artwork on the side of a newspaper office pokes fun at a rival paper's former editor-in-chief.

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

A fascinating insight into daily life in the Eastern Bloc.

Pompeii's less famous neighbor is still revealing her secrets.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

One of the shortest streets in York has an especially odd name.

The rotting skeleton of a shoreside fun fair that was destroyed by fire and storms still haunts the Brighton ocean view.

This marine reptile was discovered by one of the 19th century's greatest fossil hunters.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

Revel in the Victorian splendor of the world's oldest eating establishment inside a museum.