An FDR-era tuberculosis sanatorium has stood abandoned in the suburbs of the U.S. capital for over 30 years.

This Netherlands museum holds a gloriously mechanical collection of ornate musical automata.

Outlaws, hot springs, and tragedy have all left their mark on this ancient road in the Icelandic highlands.

The Belgian royal family's private depot now stands abandoned and forgotten alongside the tracks.

Built by the patron saint of illusionists this Elizabethan manor house is riddled with secret cubbies for hiding priests.

Since ancient times these picturesque springs have been providing bathers with healing waters.

A dark tunnel leads to a striking white crater that seems to be from another planet.

Stand at the center of this lakefront sundial, and you'll become part of the timepiece.

Cryptid lake monster honored with its own monument.

This 38-drawer structure claims the superlative title, but it isn't the world's only giant filing cabinet.

A beautiful, creepy 19th-century castle stands incongruous in rural Vermont.

Two distinctive homes on a New England village green look like a couple of frosted wedding cakes.

A terrific purveyor of natural history objects and curios.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

This aromatherapy shop and mini-museum cofounded by the Sigur Rós frontman documents Icelandic history through scents.

This verdant, tree-lined Reykjavik graveyard is both enchanting and eerie.

The oldest hall in Iceland was written of in the Sagas and features a centuries-old escape tunnel.

Surrounded by ash fields in Iceland, an impossibly verdant valley looks like something out of a fairytale.

An isolated, rusty phone booth commemorates Iceland's first international telegraph cable.

The oldest steel ship in Iceland has been beached for years and is now a rusting ruin.

This fairytale-like structure is the last turf church ever constructed in Iceland.