The entire length of the border is marked by a 20-foot-wide slash through the trees.

The meeting of the northwestern corner of Delaware, the northeastern corner of Maryland, and the southern edge of Pennsylvania.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

A toxic ghost town sitting atop a massive coal fire.

Over time, this castle grew to encompass the entire island.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

This cathedral dedicated to Louis IX, sainted King of France, holds many secrets.

The now-serene site of the largest earthquake ever recorded in North America.

CERN's beautiful, bending sculpture is a tribute to the spread of knowledge.

Home of the Large Hadron Collider and the birthplace of the World Wide Web.

One of the most historical literary characters continues to stroll his hometown.

One of the longest wooden benches in the world snakes around Geneva's Treille Promenade.

A plain wooden seat that once belonged to one of the most prominent figures of the Protestant Reformation.

On the side of a building, a depiction of the woman who became a local legend by tossing soup out her window.

A rare, flower-shaped example of Brutalist architecture in Switzerland.

Where Mary Shelley’s 'Frankenstein' and John William Polidori's 'The Vampyre' were born.

A trove of ridiculously valuable prints and manuscripts under one roof.

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

The oldest surviving wooden bridge over Rhine lets travelers cross easily from Switzerland to Liechtensten.

This striking icon of the disputed Republic of Artsakh caused a stir at a Eurovision Song Contest.