This colorful gate stands as an entrance to the walled city of Old San Juan.

This chapel on a cliff is renowned for its healing powers and was founded on the site of a supposed divine intervention.

This secret Australian garden was built on love after a man planted a random bulb he found in the ocean.

On a small Puerto Rican island, banks of secret naval bunkers lie abandoned and filled with piles of office equipment.

This Balinese sea temple is thought to be guarded by the hundreds of monkeys that live around it.

Once the foundation for a mansion, these ruins now offer amazing panoramic coastal views.

A flooded Mexican cave that hides a river beneath the water.

This portion of a lovely Belize beach is infested with (harmless) sharks and rays.

Two stone columns flank the grand Venice square, but there were supposed to be three.

This hidden rooftop garden in downtown London offers a quiet respite from a bustling city.

This demon atop the Notre-Dame de Paris looks utterly bored.

This work of art was designed to represent the Tarpeian Way Quarry that once dominated the area.

The once highest point in China blends symbolic design with a kick of adrenaline.

This bleach-white graveyard overlooking the ocean is accessed through a tunnel.

A railway station takeout shop sells boxed meals in containers shaped like trains and snowmen that hold the country’s abundant regional delicacies.

A 125-meter long "tribute to the Brazilian people."

Hidden beneath a beautiful overlook you’ll find the history of the city depicted in comic strip format next to a pay toilet.

The largest self-built castle in the U.S., six decades in the making.

A roadside attraction filled with an astounding array of gloriously wacky vehicles.

A fake mine that was made using real mining techniques which is also used as a community center.

A saloon and inn that served the Wild West's most iconic figures—and is still haunted by some of them today.

This once-popular otherworldly landscape was formed by one of the largest volcanic eruptions in history.

Open-air cremations in Colorado's self-proclaimed spiritual mecca.

Natural sonic phenomenon comes with a grisly legend of murder and blood.