Skyscraper powered by wind turbines attached between its towers.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

A wonderfully strange collection of 500+ stuffed frogs doing people things.

The big toe of this towering monument to a Croatian national hero is worn from years of superstitious rubbing.

When a supermarket opened up shop within a medieval building it became protected by UNESCO on a technicality.

One of Australia's largest secondhand bookstores.

Let these towering termite-building structures tell you where to go.

This mini version of the famous Bohemian castle was lovingly built by a Czech immigrant and mineworker.

The taxidermy remains of the mighty beast made famous by a Crocodile Dundee film.

This preserved site served as part of Northern Australia’s defense in World War II.

World War II ended before these tunnels built to protect vital oil from Japanese bombs were ever used.

Race through the maze, get your name on the sign.

These ancient monoliths make up one of the largest archaeological sites in Palau.

Last stop before the top of the highest peak in the world.

Jumping-off point for a climb up Mt. Everest is the most dangerous airport in the world.

This historic square in Nepal is home to temples dating back to the third century.

A monument to the civilian victims of the Japanese Occupation forces of World War II.

Rainbow shutters decorate this former police station.

The most playful of the life-sized statues that make up Singapore's "People of the River."

This statue once earned the distinction as one of the "Three Major Disappointments of the World."

Hidden within Sydney’s lush Royal Botanic Garden is a walled cactus rockery and the site of Australia's first zoo.

Come for the flowers, stay for the bats!

A 19th-century perch for spotting sailing ships now boasts one of the most iconic views in the Southern Hemisphere.

This unassuming chapel in Portugal plays host to a ghoulish collection of bones.