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

A secret, rocky playground hidden amongst the plain white beaches of the Florida coast.

Must form and function forever remain at odds? Not if the Florida Department of Transportation has its way.

Constant erosion has created a surreal landscape of bleached and preserved fallen trees.

Macabre astrological automaton clock dating to the late 1400s.

The first museum in the world devoted to sexual gadgetry.

Teeming with illegal goods and services, this towering maze of vice is also a popular tourist accommodation.

A colossal floating restaurant built to look like a ancient Chinese imperial palace.

A bit of retro transportation flair preserved in the world's largest department store.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Wine bottle sculpture with a ship's stateroom inside.

A safari-themed castle in the South African bush with the largest maze in the southern hemisphere.

The original goat tower, the one that started it all.

A South African bar inside a hollowed out 6,000-year-old Baobab.

Raging waters have created a strange geological site that looks like something off of a progressive rock album cover.

Caves that can't seem to quit producing the remains of prehistoric humans.

One of the tallest buildings in Africa provides a great view of Johannesburg's unique geography.

A labor of love and aviation in Nigeria.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

A semi-scholarly approach to sex.

Elevated freight railway turned wildly successful urban park.

A small park on Bourbon Street features life-size bronze statues of New Orleans musicians.

Formerly known as National D-Day Museum, this collection commemorates the battles of Normandy and WWII.

The second oldest continuously operating bar in Louisiana.