More than half of this Indian palace is drowned but it looks all the more spectacular for it.

One of the last Jazz Age "Wonder Theaters" in New York City.

A hermit's tiny cell built into the cliffside that saved him in South Pembrokeshire.

A once-luxurious, now abandoned hotel in the Italian Alps.

The giant Siberian crater known locally as the "doorway to the underworld" is expanding every year.

Its town washed away centuries ago, this lonely tower by the sea tells the tale of a mermaid and a curse.

This 700-year-old street food market features baby octopus and soy donuts.

A whimsical monument marks the highest point in Kansas, not that you could tell by the looks of it.

This family driveway also serves as the highest point in Illinois.

The highest point in Delaware is located under a trailer so this marker across the street will have to do.

The highest point in Connecticut was incorrectly memorialized before surveyors discovered the actual spot.

The highest point in Arizona is an oddly snow-topped peak within the otherwise arid state.

The highest point in Alabama was almost completely deforested, but is now home to protected towers and trees.

Where the Great Wall of China meets the sea.

These steeply terraced ruins are a stop along the Inca Trail to Machu Picchu.

Sacked by Vikings, blessed by William the Conqueror, dealt a fatal blow during the French Revolution—these ruins have seen it all.

A hidden bathhouse in one of Stockholm's oldest and busiest neighborhoods is open to anyone who can find it.

This former coal gasification plant found a curious second life as a popular public park.

A steaming, boiling hellscape sources Hokkaido's thermal baths.

This one-woman cemetery was a small civil rights victory.

The world’s largest concentrated solar plant generates as many problems as megawatts.

This spire on an Austrian mountain is wrapped around a long spiral slide and has the world's tallest wooden observation deck.

Romania's only crater lake with water as pure as if distilled.

This railroad magnate's 19th century tower is more than a little bit out of place in the Nevada desert.