A historic observatory precariously perched at the "Top of Europe."

Featuring a meatless buffet fit for kings, this family-owned Zurich eatery is considered the oldest vegetarian restaurant in the West.

This 170-year-old Swiss guesthouse built into the side of a mountain is best accessed by a cable car.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

An eerie diorama that captures the majestic nature of a few prehistoric-looking beasts.

This old estate is a remnant of when the Bronx was a popular summer destination for wealthy New Yorkers.

A Ukrainian church canteen doles out hearty fare in an East Village basement.

One of the city’s oldest watering holes was originally the home of a famous James Brown (not that one).

The world’s tallest outdoor lift stretches along the stone pillars that inspired the floating mountains in the movie “Avatar.”

The tiny statues form China's only known terracotta army from the Han dynasty.

The once highest point in China blends symbolic design with a kick of adrenaline.

This terrifying glass bridge on the side of a mountain cracks as you step on it.

The latest in a series of long glass bridges suspended at terrifying heights.

For those with no fear of heights: a skywalk 4,700 feet up on a Chinese mountain.

999 stairs lead visitors through a massive hole in a mountain known as the Gateway to Heaven.

The most famous location in China was home to whole dynasties worth of imperial rulers.

This vertical pinnacle in China was the inspiration for the floating mountains in the movie “Avatar.”

A random tree outside a Budapest hotel has become a DIY shrine to the late singer.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

Lonely minaret stump of a destroyed city.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

A breathtaking bridge that crosses a vast gorge over a river's torrents, and has a tale of a devil architect attached.

Caves famous for the dragon-slaying saint who lived there.