Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

This opulent 16th-century Maharaja’s palace is a unique mix of Hindu and Muslim designs.

The ancient water tanks remain some of the ruined city’s most beautiful architecture.

The world's second-largest sundial, made entirely out of stone.

The remains of what was, not so long ago, the world's largest city.

Thousands of exquisitely carved stone water storage wells, hundreds of stone steps fill this exquisite medieval stepwell.

5,000 skulls in memorial to those killed by the Khmer Rouge.

One of the world's largest tanks mimics the experience of watching rare whale sharks, giant rays, and deep sea creatures from the ocean floor.

This Tang Dynasty behemoth is the biggest Buddha in the world.

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.

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

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

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

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

Drink your espresso at a Victorian-era urinal in this underground-restroom-turned-coffee-bar.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

The beautiful baroque library of the Hapsburg empire.

Historic funicular railway, believed to be the shortest railroad in the world.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

An exotic wildlife habitat right off The Strip.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

This is not only one of the oldest collections in Europe, but also possibly the most beautiful.