Petrified footprints of one of the very first vertebrates to walk on land.

This European portal tomb has a capstone that weighs around 150 tons.

An ancient Egyptian temple in the middle of Madrid, Spain.

A lush indoor jungle fills this bustling Madrid transportation hub.

Hidden behind a wall, Spanish nuns distribute their signature sweets on a revolving tray.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

The world's largest wooden structure.

The final resting place of the great navigator, or maybe his brother.

Spanning the El Chorro gorge, this pathway used to be one of the most dangerous crossings in the world.

At least according to the Guinness World Records.

Private collection of art inspired by cabinets of curiosity.

A park filled with vibrant mosaics created by more than 300 folk artists.

Fantastic collection celebrating the final send-off.

Largest graveyard in all of Japan surrounds a famous mausoleum.

This Japanese national treasure was originally built in 593.

Peace Park and the Atomic Bomb Dome.

A moss-covered statue of a Japanese Buddhist deity stands at a quiet temple in downtown Osaka.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

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

The 10,000 Torii shrine.

Twelve hundred stone carvings guard this off-the-beaten-path Buddhist temple.

The quintessential Japanese rock garden has existed for more than 500 years.

Crawl through the hole in the middle of this stone to break off a bad relationship or initiate a good one.

This 14th-century temple is also known as the "Temple of the Golden Pavilion" for its gorgeous gilded reliquary hall.