An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

Where dogs like the rare "Fire-Tailed Border Cocker" run free on the mountainside.

This Costa Rican chapel is the most metal church in the world, literally.

Edgar Allan Poe's old dorm is now a shrine to the author's legacy.

An Alaska livestock farm devotes itself to harvesting wool from creatures that once ran with mammoths and sabertooth tigers.

Siberian husky that delivered a life-saving antitoxin.

A high school astronomy enthusiast designed this model of our solar system to be traversed on foot.

The magic's in the hole!

The world's smallest park was dedicated in 1948 as the only colony for leprechauns west of Ireland.

World's largest porcine hairball sits in a collection maintained by Benedictine monks.

Home of Howard Hughes' Spruce Goose.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

Eons ago, a rushing lava river formed this pristine passage through solid rock.

Gaze upon chocolate sculptures depicting everything from chariot races to Gaudí's famous church at this shrine to sweets.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

Possibly the oldest church in Barcelona, this basilica has its pagan and Christian mythologies all mixed up.

Stunning Roman aqueduct used for 1900 years and still standing.

Holy Grotto of Montserrat Monastery holds one of Europe's mysterious black Madonnas.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.