A lush indoor jungle fills this bustling Madrid transportation hub.

These distorting, funhouse mirrors achieved fame in a renowned piece of Spanish theater.

Order cookies baked by cloistered nuns in a 400-year-old monastery.

An automaton perched above an classic clock and watch store

The little church's beautifully frescoed ceiling has earned it the nickname “the Sistine Chapel of Madrid.”

A whimsical brother of the nearby Fallen Angel statue takes the falling part quite literally.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

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

An architect's childhood fantasy treehouse made real.

A makeshift shrine to the late rock star is still kept up on the nondescript façade outside 1 Logan Place.

Inside this church are the alleged remains of the patron saint of lovers, epileptics, and beekeepers.

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

The only urban monument in the world designed by the great surrealist painter Salvador Dalí.

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

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

A beautiful geyser under environmental threat.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The chaotic studio of one of the 20th century's most important artists has been preserved down to the dust.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

A shrine built to combat the bad karma of a commercial venture.

A forest of phallic offerings found in a quiet corner of a hotel car park.

A kaleidoscopic warehouse-maze of handmade neon signs.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.