One of the oldest and certainly best preserved Cistercian abbeys still in existence.

Lombardy poplars planted to imitate the size and shape of the Cathedral of Notre-Dame de Reims.

The abandoned Japanese amusement park once loomed as a dystopian Disneyland.

An abandoned 19th century quarry in the middle of the woods, remade by unnamed wanderers into a massive series of rock thrones.

Overgrown ruins of a turn of the century island fort that sees very few visitors.

An underwater city for the dead.

A skeletal collection of former nautical mainstays.

Stunning examples of Russia's 18th-century wooden architecture.

Abandoned railway line circling the city of Paris.

Fascination continues to surround one of history's most infamous shipwrecks.

The former Naval shipyard is open for exploring - mostly.

Opulent downtown movie theater now houses cars as an indoor parking garage.

Nature is leading a successful mutiny on this century-old freighter.

World's first "penitentiary," meant to be humane, drove men insane.

Submerged trees jut ghost-like out of an idyllic turquoise mountain lake.

Neither Spanish settlers nor anyone since has been able to tell who built these strange California rock walls.

A Beaux-Arts triumph set to become Ford's innovation campus

This Belgian theme park began as a refuge for bored church children and was closed down when a boy lost an arm.

A sunken idol welcomes parishioners to Davy Jones' Locker.

An eerie, derelict amusement park in Berlin.

Beijing's version of Disneyland, completely abandoned, mostly destroyed.

The abandoned personal amusement park of the King of Pop.

Despite being a perfectly pleasant place to be, Loyalton can't seem to attract any visitors.

A religious-themed park filled with folk art to bring biblical stories to life that fell into disrepair and now being restored.