Life-sized painted illusions let pedestrians blend in with the street art.

This strange moor has a song written about it, Bronze Age carvings, and an alien sighting.

Once thought to be the mysterious work of a witchy prophetess, a well with unusual properties turns objects into "stone".

A 600-year-old mini shrine guarded by a sword-wielding knight hides in a crumbling cliff face.

This Welsh village gave itself a ridiculous name in a publicity stunt a century ahead of its time.

One of Vietnam's most iconic landmarks was built by Japanese traders and is now in danger of sinking.

This sculpture marks the spot where one of the greatest Roman rulers was proclaimed emperor.

Follow the original medieval paths that wind through this intriguing section of the city.

Believed to be the longest railway bench in the world.

Where the rules of that most quintessentially English game were first devised by an eccentric inventor.

The home of an eccentric Edwardian gentleman is packed to the rafters with handcrafted items collected over a lifetime.

Two women with a flair for both adventure and artful clutter created this singular round home.

A massive flood devastated this seaside town, causing many to speculate about whether the government had figured out how to influence the weather.

An allegorical statue of a giant pregnant woman representing justice and truth.

A crumbling hospital from the 1850s on Roosevelt Island.

One of only two commuter aerial tramways in the United States.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.

The chefs at El Diablo use heat generated by an active volcano to cook the food.

Visit a surreal landscape so otherworldly NASA actually used it to train the Apollo 17 crew.

Partially collapsed lava tube and cave system complete with concert hall, underground pond, and unique albino crabs.

This spectacular bridge supported by two gigantic hands looks like something out of a fantasy universe.