The largest permanent Monopoly board makes one of the longest games even bigger.

Tour the world's largest deep-hole dimension granite quarry, where you can view the plant where gravestones are made and roll a ball down the outdoor granite bowling alley.

A science teacher's dream.

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

A hollow cement depiction of time's inexorable effect on the human body.

Despite being one of the most photographed vistas in the Rockies these twin peaks are rightfully known as the "Deadly Bells."

A stealthy Apache hideaway that became the haunting site of a mass grave.

Tucked in a nondescript downtown Brooklyn mall is a bar containing a remarkable turn of the century anatomical wax collection last seen in 1920s Berlin.

This former Norwegian sailor's church is slowly being taken over by ramshackle robot musicians.

Stay in a room with a view... of the bottom of the ocean.

A natural gas leak provides a flickering flame beneath a waterfall.

Experience a quartz crystal sound bath inside a storied, all-wood sound-chamber.

This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

Sandstone rock formations that look like they belong on the cover of a progressive rock album.

The only diamond mine in the world where you can keep what you find.

Visit this playground of waterfalls, caves and sinkholes.

An eccentric inventor's castle home with its own indoor weather system.

Finale of "William Tell Overture" can be heard as drivers pass over grooves in the road.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

A Swedenborgian glass church surrounded by redwoods sits perched atop a massive landslide area.

Rare recess caves fill this unbelievably beautiful Ohio park.

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

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

The highest bridge in America was built for an almost unnervingly small amount of money.