Kenya’s oldest town is more than 700 years old and home to 6,000 donkeys.

Large, airy hallways hide within an impenetrable fortress that beckons urban explorers.

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

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

Artwork tucked within the trees greets visitors with surreal sonic experiences.

The labyrinthine home of the National Archives of Estonia is an experimental blend of architecture, art, and history.

The 1,000-year-old abbey is the birthplace of modern musical notation.

Its front wall is striped with a menagerie of fantastic beasts and magnificent monsters.

Crouch down, stretch tall, and be sure to flail your legs to pay homage to the Monty Python classic.

The world's newest astronomical clock is also its most accurate.

The steepest classic funicular in the world glides along a dizzying incline.

On the outskirts of a desert trading village high on the Andean plain, steel giants have been destroyed by salt winds.

An exotic reptile facility showcasing some of the rarest, most venomous snakes in the world.

A memorial to the monk who set himself on fire to protest the persecution of Buddhists in Vietnam.

These sacred totem houses connect the Fatakulu people with the spirits of their ancestors.

A public display of prehistoric space rocks is named for the Namibian village where they were found.

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

A kitschy Italian medieval-style castle incongruously located amidst one of the most historic towns in the Peruvian Amazon.

The Victorian-era greenhouse is stuffed with tropical plants, and open 365 days a year.

Street artists transformed an abandoned air vent into the beloved Star Wars robot.

Made from trees and then abandoned, this fence is still growing along a path in Germany.

A giant concrete Brutalist water tower in suburban Johannesburg.

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

At this unusual park, domes, ladders, chairs, and more are made from trees.