These towering spires and glowing walls are carefully crafted from hundreds of thousands of icicles.

A stone arch leads to a cavernous 1930s spring house tucked away in the Pennsylvania woods.

This eclectic homestead is home to a miniature windmill and Connecticut's last tollbooth.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

All that's left of the quintessential "cabin in the woods."

The remains of Crystal Palace Great Exhibition of 1851.

The subterranean "lake" below the Paris opera house inspired the Phantom of the Opera's lair.

It was an experiment to prove that glacial boulders and rocks can be used in constructions and dwelling.

Site of the graveyard vine believed to be a curse on a family from the 1800s.

Play everything you see at a museum dedicated to a town's historic organ industry.

Designed as a place for patients to take in the scenery, this tower has a dark history.

The house where Rudyard Kipling wrote the Jungle Book is also the location of the first tennis court in Vermont.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

This dig site outside D.C. is known for its exceptionally high density of baby dinosaur fossils and dinosaur eggs.

The longest escalator in the Western Hemisphere takes over three minutes to ride down.

After hundreds of years of settlement, this once-bustling fishing village sunk into the Chesapeake Bay.

This abandoned Victorian-style house was built in 1884.

A girls' boarding school inspired by the Chicago World's Fair, once abandoned, now restored to strange and scenic glory.

A priceless collection of the Nation's cryptologic history.

An astounding collection of medical specimens, including bits of President Lincoln.

A museum dedicated to exhibiting remarkable outsider art.

Fiji mermaids, mummified remains, and recreated cryptids are among the morbid oddities at this Maryland museum.

The man who first patented the Ouija board rests in peace beneath a headstone that playfully reflects that achievement.

The trials and tribulations of marking Poe's grave.