The 953 windows undoubtedly make this the world's most beautiful screened porch.

The world's second-largest sundial, made entirely out of stone.

Sacred Indian temple that’s all monkey business.

More than half of this Indian palace is drowned but it looks all the more spectacular for it.

Thousands of exquisitely carved stone water storage wells, hundreds of stone steps fill this exquisite medieval stepwell.

Try not to get slimed in Tribeca.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

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

A terrific purveyor of natural history objects and curios.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.