A simple plaque on the facade is the only reminder that the treaty ending the American Revolution was signed inside.

An all-American grocery store in Paris sells U.S. "cuisine" like Pop-Tarts and Heinz ketchup to homesick ex-pats.

This demon atop the Notre-Dame de Paris looks utterly bored.

The celebrated eyesore created by starry-eyed sweethearts.

This bridge was constructed from the rubble of the infamous Bastille.

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

Spiral alpine structure provides an alternative experience of viewing the Matterhorn.

This charming fountain honors Felix Salten, the creator of the iconic storybook deer.

The Swiss artist's bulbous and overgrown shape-shifting sculpture controversially graces the center of Bern.

The bears of Bern have been a city highlight for over 500 years.

A Swiss board game museum housed inside a picture-perfect castle.

This simple apartment may have inspired some of the most important theories in the history of science.

A cablecar-station-turned-revolving restaurant with 360-degree views of the Swiss skyline.

Traversing steep Alpine slopes, this engineering marvel is one of the longest and highest funiculars in the world.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

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

The world's tallest church tower reveals a spectacular view to anyone up to the task of climbing the daunting staircase.

The prototype for all Nazi concentration camps.

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

A striking 12th-century-style castle built on the edge of a cliff.

The fairy tale castle of the "fairy-tale king."