In the bowels of a 19th-century brewery lurks a fine-dining restaurant offering an array of themed feasts.

A beloved horticultural oasis on the grounds of a wealthy family's former estate.

Designed by Horace Trumbauer in 1893, this Gothic-style castle is now a home for academics.

These lush botanical gardens employ the most purrfect pest control force.

An 18th-century Catholic church converted into an eccentric temple of music and bacchanalia.

A quiet, gothic haven nestled between Pittsburgh's Squirrel Hill and Point Breeze neighborhoods.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

"Dark Sky Park" is heaven on Earth for astronomers, one of the rare U.S. locations with no artificial light pollution.

These beautiful ruins deep in the Pennsylvania woods are thought to have been a ski lodge or a speakeasy, but no one really knows.

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

Where America's first doomsday cult awaited the end of the world.