Locals use these rock pools and waterfalls for swimming and cliff diving.

A sinkhole and now a swimming hole, too, full of dazzling turquoise water.

The small candy-colored ride is the last rooftop Ferris wheel in Tokyo.

One of the world's tallest Ferris wheels takes visitors high above Las Vegas in a spinning party room.

The first skyscraper to include a Ferris wheel built into the facade.

A giant rooftop ride with unbeatable views of Matsuyama city, the nearby mountain ranges, and the Inland Sea.

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

This scalding hot river was thought to be a myth until one geoscientist made it his quest to study the mystical waters.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

This series of rope-style bridges brings visitors into a jungle layer that is usually reserved for birds and monkeys.

Once described as the "Eagle's Nest," this ruined ancient city rests on a remote mountaintop.

Seven streams tumble over a cliff, resulting in this dazzling waterfall in the Nigerian rainforest.

A series of modernist treehouse hotel rooms grace the outskirts of an Arctic forest.

A series of sculptures beneath the waves promote ocean conservation and support coral reefs.

The frozen bubbles that form on the icy surface of this Canadian lake contain enough methane to create a small explosion.

A full-scale sculpture of a mermaid and baby grand piano hidden underwater by David Copperfield.

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

Some call this eerie forest of crooked trees the "Bermuda Triangle of Romania."

Twisted trees shaped by coastal winds make this woodland look like something from a spooky story.

Mysterious heaps of stones dot these otherworldly woods.

Nestled in an unassuming residential area, this "forbidden forest" is rumored to spirit away those who dare enter it.

Once a 19th-century brasserie, this McDonald's exterior celebrates Alsatian design and the "King of Beer."

The world's only teal arches exist in a city that cares more about its aesthetic than an Instagram influencer.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.