The grounds and buildings of an old wood pulp mill have been transformed into an innovative art park and museum.

This whimsical stacked cabin looks like something out of a children's book.

Structure built from the skulls of vanquished foes.

This museum dedicated to the history of the medical bone trade and human osteology.

This bridge's unique architecture honors nautical heritage and encourages self-awareness.

A giant roundabout made up of six smaller roundabouts can befuddle the uninitiated.

At just 25 inches at its narrowest point, it's one of the tightest streets in the world.

With its webbed walls and bright red coloring, Calgary's iconic bridge looks like a finger trap puzzle stretched across the river.

An ingenious solution to a tricky engineering problem, this spiraling bridge takes drivers for a dizzying spin.

The highest pedestrian bridge in Singapore looks like a series of undulating waves rising between two public parks.

This abandoned viewing platform has become a monument to unnecessary government spending.

The equator passes through this tiny island in the eastern Atlantic.

Why walk on this historical site when you can zoom down instead?

In 2018, Pohoiki Road was severed by lava flowing from the eruption of Kilauea.

Colin Stokes "got a bit carried away" and built a castle that looks like something out of Tolkien.

The longest navigable underground river in the United States is home to countless blind and albino animals.

The most remote tree in the world survived desertification, but not a drunk truck driver.

A futuristic hovertrain is parked unceremoniously alongside a nondescript road.

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

The purported world's shortest international bridge connects a homeowner in Canada to his backyard in New York.

This magical oasis in East Texas is one of the most biodiverse acres in the country.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

Houses are tucked between, on, and underneath giant boulders.

This sinkhole in the Arizona desert is filled with carbonated, arsenic-rich water