This old cement mine has been used as everything from a mushroom farm to a recording studio.

A deteriorating 1990s Girl Scout camp in a beautiful lush park on Lake Ontario.

Reclaimed by nature, the ruins of Doodletown, New York are remnants of a town consumed by a state park.

A once grand hotel is being retaken by the wilderness it once capitalized on.

An abandoned castle owned and ignored by Masons carries a cursed history.

The tech giant built three enormous glass orbs in Seattle so employees could work inside a rainforest greenhouse.

Peruse rare tomes like poetry bound in pearls or books with branches and berries growing out of their spines.

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

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

This fantastical waterfall is hidden in a cave located in a cracked cliff.

Rising from the sea like a stone monster.

Staves, storm-calling, and of course, necropants.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

Medicinal spa created with the discharge from a geothermal energy plant.

This painted blacktop brings the classic arcade game to life.

A colorful architectural gem in Seattle's uniquely modern Central Library.

This massive library holds what was once the largest book collection in the world.

The oldest stone house in Paris was built by its most famous alchemist.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

The enchanting archway is the only surviving portal into Dublin's lost medieval wall.

Dublin's "Dead Zoo" serves as a window to Victorian museum design.

An 80-year-old plane tree is devouring an iron bench at Ireland's oldest law school.