Generations of rockhounds got their start at this beloved, historic mine.

This picturesque abandoned home is rumored to be a spite house.

This dam in the woods, built by Henry Ford with only manpower and oxen, holds no water and serves no purpose.

This general store near Boston was once owned by Henry Ford, who had it relocated to a different town using a team of oxen.

The oldest continuously-operated inn in the United States, once owned by Henry Ford.

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

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.

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

This unusual building straddles two countries.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

A New England ghost town features a trail of boulders etched with intriguing life lessons.

Dispersed across 45-acres, 39 structures house a massive collection celebrating American Folk Art.

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

One car at a time please.

A pair of giant roadside arrows are all that remains of a former Route 66 trading post.

On the outskirts of a reborn ghost town, a decaying post office remembers the bad old days.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

Once the product of an inexplicable gold strike, this ghost town is now home to one man and his love of classic machines.

Arizona's first government hub is a rustic cabin now preserved as part of a historical museum.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

The Corinthian columns that towered over Abraham Lincoln’s inauguration stand proud.

According to folklore, Vermont's slanted windows were installed to keep witches from flying into the house.

The awe-inspiring ship from the golden era of cruising has an incomparable history and a reputation as one of the world’s most haunted places.