The oldest amusement park in the world has been providing a nice spot to have some fun since the 1500s.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

The celebrated eyesore created by starry-eyed sweethearts.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

A short distance from the Eiffel Tower is the final resting place of several of the city’s more well-known and interesting characters.

A private garden of sculptural eccentricities.

This tiny cafe is one of the last meeting places of its kind, allowing revolutionaries a place to plot.

These medieval ruins have survived since the 12th century, even providing shelter from the Nazis.

The castle where the Marquis de Sade lived out his darkest fantasies.

A fearsome dragon clings to a corner of Munich's city hall.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

The footprint of a frustrated devil in Munich's Cathedral.

The unusually large seat sits atop the base of a ruined temple.

The prototype for all Nazi concentration camps.

Ancient ruins hidden underneath a modern luxury hotel.

A monumental fountain in Rome features a large statue of Moses that has been criticized for centuries.

Installed in an act of one-upsmanship, the annual sundial in this church is also a symbolic victory for the Gregorian calendar.

A burial vault located under Tiber Island in the middle of the Italian capital.

This is the oldest Roman-made bridge in the city still existing in its original state.

A rare example of a medieval house in Rome adorned with a melancholic inscription.

This small, ancient Roman temple was once a church dedicated to the patron saint of penitents.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

The Pope’s secret escape route.