Over 100 concrete munitions bunkers are all that remain of a Pennsylvanian village seized by the US government.

A 60-room castle constructed by a horse-racing heir.

Eco-friendly island mansion.

You can spend the night as an honorary lighthouse keeper in this quaint, historic beacon.

Unicorns, elephants, and bears, oh my!

This storybook New England home is actually a decommissioned lighthouse.

The idyllic colonial home of the artist behind the famous portraits of George Washington and Thomas Jefferson.

The only surviving fragment of the lost Narragansett Pier Casino.

Off a hiking trail in Rhode Island stands a picturesque memorial to a long-forgotten war.

Tucked away in downtown Westerly is America's first shark history museum.

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

A carriage house converted into what resembles an 11th-century English manor house

A historic recreation of the golden age of the Erie Canal, abandoned for some time, slowly being restored.

A lake in the middle of the tundra of Quebec is said to be the purest freshwater lake on Earth.

This public library still showcases its former life as a 19th-century church.

During this Shetland Islands celebration, hundreds of torch-carrying "guizers" lead a procession to burn a viking longboat.

Recreations of a Norse longhouse and boat on Shetland's northernmost inhabited island.

On a remote island, legend has it that a fiddler and his wife were turned to stone.

A remote island holds what claims to be Scotland's smallest cinema.

The recurring nature of this geographic feature might make it unique in the world.

A remarkably well preserved tower dating all the way back to the Iron Age.

This picturesque archeological site looks like it was pulled straight from a fantasy novel.

Despite finally receiving electricity in 1970, this tiny town is now deserted.

This isolated structure beckons adventurers with sublime views of the Faroe Islands.