19th century pendulum and a clock restored by a rogue group of guerilla artists.

A museum on the history of Paris, including a set of Napoleon's toiletries, Proust's room, and relics of the Revolution.

France's national museum of scientific and industrial instruments.

The celebrated eyesore created by starry-eyed sweethearts.

This massive library holds what was once the largest book collection in the world.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

A neo-Gothic church built to thank God for saving the Emperor of Austria from an assassination.

Located right outside of Vienna, visitors can take in expansive views of an ethereal forest.

This hidden art nouveau gem was designed by an architect in search of a national style.

Tucked away near more famous landmarks lies a statue meant to symbolize the confluence and continuing development of human culture.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

This quaint Hungarian railway system is operated exclusively by children between the ages of 10 and 14.

Hungarian self-built castle.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

A golden plaque marks the site of the mysterious unsolved assassination of the former Swedish prime minister.

Despite the groans of archaeologists, this astounding groups of Bronze Age petroglyphs have been painted red for tourists.

Ancient burial grounds of the wealthy.

Now a hotel, this former bank was the site of a robbery that spawned a psychological phenomenon.

This homeless brass fox tugs at your heartstrings from the foot of a Stockholm bridge.

The second oldest anatomical theater is housed in a museum of curiosities.

This chimerical bridge/tunnel appears to dead end right into the sea.

The library's graceful rotunda is like a bibliophile's temple.

This Stockholm light tower can be controlled by anyone with a smartphone.