San Diego's most historic and haunted home.

The oldest burial ground in the city, final resting place of city founders, Ohlone natives and murderers alike.

This massive redwood tree has a hole in the base big enough to drive through.

One of the last few places in Manhattan that employed a pneumatic systemic keeps it on display.

An abandoned vacation home spent a decade taking on legends. It's now taking on water.

The final resting place of the great escape artist, where some still gather to wait for his escape from death.

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

This permanent exhibition celebrates the finest of our heartless automatons both real and fictional.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

Huge masonic hall in Philadelphia with lavishly themed rooms.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

A storybook European village in Berkeley.

The crumbling remains of a 19th century fortess.

This home is decked out like a psychedelic explosion of colors and bowling balls.

This brightly made over hotel hides decades of suicide, serial killers, and mysterious deaths.

Costumed elves and mountain bikers co-exist peacefully at this abandoned Christmas-themed adventure park.

Everyone remembers Laurie Strode from Halloween, but this is the house where most of the blood was shed.

This family mausoleum is steeped in symbolism and looks more like a fantasy location than a grave.

A half-mile long and three stories high, this bridge over the Des Moines River Valley mimics a descent into a mine shaft.

The best Tiki bar in Las Vegas.

Visit this playground of waterfalls, caves and sinkholes.

These aggressively sustainable art homes look like something out of 1970's science fiction.

Crumbling ruins mark the site of a couple's grisly murder in the woods.

Yale University's home for rare works, including the mysterious Voynich Manuscript.