In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

This historic national park is covered in the stunning ruins of red rock pueblos.

The wreckage of a deadly bomber plane crash can still be found near an Arizona peak.

The highest point in Arizona is an oddly snow-topped peak within the otherwise arid state.

Eons ago, a rushing lava river formed this pristine passage through solid rock.

An arsenic-filled pool in the Grand Canyon takes on the appearance of a giant, overflowing pumpkin.

The cinder cone volcano with a less than complimentary name.

The eroded core of an ancient volcano is now accessible by a short hike.

A monument to the one-armed geologist who led the first documented expeditions through the Grand Canyon.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

The creek where a shark wreaked terror upon New Jersey, and served as the inspiration for "Jaws."

Step into Monet's world at this fine-dining restaurant in the middle of a New Jersey sculpture park.

This disastrous New Jersey safari park saw animal attacks, escapes, and disease before being abandoned.

Nassau Hall has served as army barracks, a museum, and played a key role in the American Revolution.

This massive boulder is either a unique rock formation created by glacial melt or a magic energy vortex.

A winding, cliffside stretch of road overlooking the Delaware River.

It would take 35 firetrucks to fill this enormous glacial pothole.

Once in a state of dilapidation, this candy-inspired fortress is now being revived.

Whimsical artist house in the New Jersey woods.

The headquarters of the Fraternitas Rosae Crucis, complete with Rosicrucian pyramids, all in the Pennsylvania woods.

The graffitied ruins stand hidden within the Pennsylvania woods.

An Olympic hero stripped of his medals is buried in a town he never visited, which took his name after his death.

This jail which was in service for over a century is now open for curious visitors.

A trove of century-old litho stones from the Puck Building's printing days were discovered behind a cellar wall, and are now hanging in the store.