Ruins of the elaborate house where the enigmatic costume designer threw glamorous parties for New York's theatrical elite.

A former major munitions plant that has been converted into a sprawling art space.

One of Ireland's most infamous prisons for rebels including men, women and children.

Beautiful Austrian natural history museum with carved ceilings and row after row of ancient taxidermy.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

No one messes with the Massachusetts sacred cod, not this time...

This miniature feudal castle was built on a whim to honor a US Navy pioneer.

Amidst the bustling streets of Dublin, there is a hushed garden that is dedicated to "All those who gave their lives in the cause of Irish Freedom."

A museum dedicated to a secret military hospital hidden beneath a castle in Budapest.

A mysterious stone embedded at the base of a historic Boston building.

The birthplace of American international flight service has been turned into a celebrity's microbrewery.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

The site of the climactic scene from the classic horror film is now a historic landmark.