Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

Just like in Hollywood, Madrid has also a forgotten walk of fame.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

Commonly acknowledged as the only public monument to the Devil himself.

The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

A submerged village appears when dam levels drop.

A lush oasis full of vibrant plants and striking geometric displays.

A micronation on an islet along the coast of a Portuguese island.

Men in rubber-soled boots serve as your "brakes" on this toboggan ride Hemingway described as "exhilarating."

A hidden three-foot-wide house separates these two regal churches.

The stunning interior of this Gothic church is covered in ornate gold details.

Along a rail-biking route, giant insects house a two-story restaurant.

South Korea's women of the sea have completely flipped their society's structure by becoming revered fisherwomen.

The world's first cruise ship-shaped hotel is perched atop a cliff.

One man's lifetime collection of tiny objects of wisdom gathered from around the world, on display for public enjoyment.

Asia's largest limestone cave is home to a world of plastic goblins and gold mining history.

South Korea's only sex-themed park.

The oldest Jewish cemetery in Southeast Asia is a monument to a disappearing community.

Come in, light some incense, and ignore the live snakes around you.

This dangerous-looking suspension bridge may have been too unstable to remain open.

One of the largest caverns in the world has a maw large enough to stack cathedrals in.

Malaysian fireflies create a dazzling display as thousands light up in unison.

Holy Hindu shrine in an enormous, monkey-filled limestone cavern.

A mysterious set of tunnels carved in the hills of rural northern Kyushu.