The Kalamazoo factory has 100 years of instrument-making, and one big wartime secret.

One man's attempt to create an artistic wonder on a run-down block in Detroit.

Astounding collection of coin-operated games and automata.

The Beaux-Arts aquarium boasts a vast collection of saltwater and freshwater fish on an island in the Detroit River.

This sprawling bookstore spans four floors and has more than a million books in stock.

This Cleveland mansion has played host to a German singing group, a Prohibition-era speakeasy, a funeral parlor, and many civil rights meetings.

Once home to more than 50 displays of freshwater fish.

This former tuberculosis treatment facility now stands at the center of a public park.

The only presidential monument to display a late POTUS's actual casket.

This lovely university observatory continues to sit abandoned since its potential savior was sent to jail for fraud.

In the parking lot of a fast food restaurant, a statue memorializing a prolific bull elephant.

Behold the rickety wooden glory of the world's oldest operating roller coaster.

A failed piece of Orientalism has become the proud symbol of a community.

Yo, Adrian!

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

This abandoned Poconos resort is haunted by a history of kitschy romance and a violent fugitive.

A stone arch leads to a cavernous 1930s spring house tucked away in the Pennsylvania woods.

A layered tribute to the work of mosaicist Isaiah Zagar.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

Board a mine car and descend the #190 slope 300 feet underground into the Clark Vein of coal.

A train station that was abandoned by the coal industry and was later converted into a cocktail bar.

The graffitied ruins stand hidden within the Pennsylvania woods.

The world's first aircraft factory has been hiding inside an automobile plant for almost 80 years.

This alley-cum-fan gallery in the ex-Nirvana drummer's hometown holds the world's largest drumsticks.