A huge musical sculpture and other art installations on the National Oceanic and Atmospheric Administration grounds.

Former farm staffed by mental patients is now a public park.

Museum dedicated to the art of cutting and polishing stones.

The real life Hobbiton, this sheep farm has been forever transformed since being built for The Hobbit film series.

"the sweltering inhabitants of Charleston and New Orleans, of Madras and Bombay and Calcutta, drink at my well . . . The pure Walden water is mingled with the sacred water of the Ganges."

Museum on French naval history, with magnificent figureheads, a historic diving suit, and a boat used by Napoleon.

The end of the 4 Line is also the end of the line for 300,000 souls in one of NYC's most illustrious cemeteries.

The largest drain hole in the world.

Celebrating the transformation of trash into objects of beauty.

A trash dump made beautiful by nature's power.

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 stunning landscape of bunkers that once stored chemical weapons.

Home to the deepest rift anywhere on Earth.

The longest continuous lava tube in Oregon.

The longest continuous lava tube in the continental U.S. offers 2.5 miles of dark explorations for the adventurous.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

The bullet-riddled wall from the St. Valentine's Day Massacre, bloodstains enhanced for your viewing pleasure.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

A home made entirely from scrapped, reclaimed and recycled material in Whitman County, Washington.

Dive bar built out of the remains of a whaling ship.

A working model of the entire San Francisco Bay and much of the Sacramento River Delta, complete with regular tides that change every 14 minutes.

Law-protected wreckage serves as a peculiar memorial for an almost forgotten World War II tragedy.

Housing a morgue, rare and confiscated weapons, and autopsy remains, the Vancouver police museum displays the dark side of Canada.

A heavenly experience, right here on Terra Firma.