This tribute to the fictional detective stands at the famous literary character's address.

A never-finished memorial to the heroes of the Napoleonic War has become "Scotland's Folly."

Colonial Williamsburg was home to one of the earliest institutions in North America dedicated to educating Black children.

An indoor botanical garden for tropical plants looks like a giant cylinder lying on its side.

In the 1920s, this stretch of Roanoke became home to a thriving Black community.

The Lincoln Memorial has inspired many, even though a word on the inscription appears to be spelled incorrectly.

The 10th-tallest pyramid in the world, this former sports arena is now home to a massive Bass Pro Shops store.

A dramatic coastline that’s home to a rare pine tree.

The world’s oldest active sailing ship.

Go deep on these fascinating fish, and get a bonus lesson on the importance of marine conservation.

Glimpse into the life cycle of the European lobster and the work being done to protect them.

The oldest continuously-running professional dinner theater in the United States.

An abandoned building that once tightened a power line that stretched across Messina Strait.

Climb the dead electric pylons of Messina.

According to tradition this is the oldest church in Venice, but its actual age is a mystery.

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

In the past, Renaissance sex workers were encouraged to entice customers on this bridge.

The ruins of the largest gladiatorial school in Rome are largely hidden under modern streets.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

Erected in memory of Sir Arthur Conan Doyle, who was born close to this spot, this statue commemorates the author and his famous detective.

An unexpected but incredible collection of wildlife dioramas spanning rainforests, swamps, forests, and plains.

Three bronze beauty queens welcome you to “Miss America University.”

This two-and-a-half-ton chunk of rock was gifted to the Prudential company by the British Navy in 1955.