A meandering boardwalk across the bogland leads to a "stairway to heaven" with sublime views.

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

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

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

With the Wild Bunch hunted almost to extinction and the law closing in on him, Butch Cassidy fled to this remote cabin in Argentina.

The world's fifth tallest waterfall is a spectacular silver chute of water that cuts through the cloud forest in northern Peru.

With nearly double the depth of the Grand Canyon, this Peruvian canyon is one of the deepest in the world.

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

A vintage video game wonderland in downtown Reykjavik.

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

An enormous playhouse designed to look like 21 stacked Lego bricks, with another 25 million colorful Legos inside.

Go through the looking glass in Tokyo's Wonderland-themed shop.

An abandoned Soviet-era mining town in the mountains of South Kazakhstan.

This haunted hotel built on natural springs once served as a hospital for a quack doctor promising a cure for cancer.

This 15th-century island fortress later served as home to the executioners no one wanted to live near.

Bonsai trees that are up to a thousand years old.

The crypts are so large they're basically their own underground church.

Guitar made of trees, dedicated to a man's lost love.

The construction of a tram line unveiled hidden remnants of the old medieval city.

A Seussian sculpture made of brass instruments.

A dark tunnel leads to a striking white crater that seems to be from another planet.

Centuries before the modern seismograph, Armenian monks measured quakes with this tilting pillar.

This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

Stenciled handprints and wall paintings dating back 10,000 years, some of the earliest forms of cave art.