This replica of the Greek structure is in the heart of Nashville.

The crumbling remains of a 19th century fortess.

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.

An abandoned warehouse turned art sanctuary in New Orleans.

The world-record holder for the longest bridge stretching continuously over water.

Once defending the city of New Orleans from invasion by sea, this fort faces an uncertain future.

A 19th-century shrine covered with prosthetic body parts as votive offerings.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

The final resting place of New Orleans' most famous voodoo priestess.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

Advice-columnist's bell tower, paid for with pennies.

Detroit’s Eastern Market has been transformed into an outdoor museum with colorful murals that address social issues and symbolize the city.

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.