The Netherlands is home to a bridge printed out of reinforced concrete.

The remains of a doomed Antarctic plane, buried beneath layers of ice and snow, await those willing to do a bit of digging.

The randomness of this wall of lava lamps helps encrypt up to 10 percent of the internet.

A dead saint, a deadly poison, and a mysterious holy ooze.

One of the world's oldest trees comes with a Welsh legend intertwining it with a spirit prophesying death.

Over 100 million years ago, beach-bound dinosaurs left permanent marks on San Antonio's landscape.

A public urinal so pretty, it was declared a national monument.

This ruined fortress was the stronghold for a persecuted medieval leader and his infamous Assassins.

This remarkable prehistoric town is full of watchtowers and houses that have withstood thousands of years.

Travelers leave tea kettles in a remote part of Death Valley as part of a mysterious, decades-old tradition.

A visionary Italian architect created an impressive cluster of concrete structures for a family's private tomb.

The stunning interior of this Gothic church is covered in ornate gold details.

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

At the United Kingdom's only residential library you can sleep among the books.

Over 1.3 million confiscated wildlife products fill this macabre menagerie of illegal animal specimens.

The Kalamazoo factory has 100 years of instrument-making, and one big wartime secret.

Perhaps the most scandalous statue of America's first president.

A mysterious ancient network of thousands of perfectly straight lines stretching across miles of Bolivian desert.

This charming railway is one of the oldest and steepest funiculars in England.

The abandoned "Ghost Mansion" was left to decay in the mountains of Northern Italy.

The Virginia home of one of the signers of the Declaration of Independence is being preserved with a unique glass facade.

Elaborate patterns adorn the city's disappearing traditional architecture.

A tribute to an iconic act of defiance from the Croatian War of Independence involving a small car.

Something's watching you.