Rumored to be the famed pirate's lookout tower, this historic stone structure is now just watching for tourists.

After Christopher Columbus died, his son built a fancy house to rule from.

Built in 1512, the oldest cathedral in the Americas.

The final resting place of Christopher Columbus - or possibly someone else.

In this small strip mall resides the largest collection of original art from the famed TV artist.

Near the ruins of a Civil War coastal fortress lies the only known African refugee cemetery in the United States.

Part of a highway network meant to connect Miami to Montreal, this 10-mile stretch of road made from red bricks is still around 100 years later.

How Quincy, Florida became the richest town per capita due to one man's shrewd business acumen and taste for fizzy drinks.

"We Seceded Where Others Failed."

The smallest post office in the United States is no bigger than a broom closet.

This spiny beast guards an artist's village while vying for the title of largest lobster in the world.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

It turns out that a hurricane-prone beach is probably not the best place to house wild animals.

A community of collapsing homes more than a mile out from the Florida coast.

A monument celebrating the idea of reaching inaccessible places.

Where monkeys run wild and the humans are caged.

An abandoned water sports stadium that has become a haven for graffiti and decay.

A tribute to Ponce de Leon's supposed quest for eternal youth.

A colossal statue with a controversial past, forgotten for more than 30 years.

The house that birthed The Old Man and The Sea is now a museum devoted to the old man who wrote it.

A focal point of the Cuban government, this city square features one of the most iconic images in the country.

The seat of the lost Ryukyu Kingdom has survived numerous fires and wars over the centuries.

Elaborate series of tunnels where traces of mass suicide are still visible.

One of the world's largest tanks mimics the experience of watching rare whale sharks, giant rays, and deep sea creatures from the ocean floor.