Famously misunderstood wonder of the ancient world

Besieged by war, this castle ruin has crumbled into a peaceful picnic spot.

A giant white horse drawn on an English hillside may not have been intended to be a horse at all.

The longest hedge maze in the world.

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

Quirky castle designed by the American actor best known for portraying Sherlock Holmes on stage.

The US Navy's only submarine museum is also home to the world's first nuclear submarine.

This museum holds a fully-functional replica of the "Turtle," the first American submarine ever built.

This Tuscan lake hides a 13th century town that is still visible when the water recedes.

The glowing blue Nymphaeum of Emperor Tiberius.

A stunning bridge that appears as if it's lunging to the shore, and has a legend of a devilish architect.

A massive natural rock arch gives the Tuscan mountain its own window to the sky.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

Hidden for 165 years inside a building designed by Thomas Jefferson are the remains of what may be America's first educational chemistry lab.

The final resting place of the tragic king and queen of the Jazz Age is tucked away in a small Maryland graveyard.

Walk a trail through a historic Quaker town that outlawed slavery in 1777 and was a major waypoint on the Underground Railroad.

This vertical pinnacle in China was the inspiration for the floating mountains in the movie “Avatar.”

Settled by the Church of Jesus Christ of Latter-day Saints in 1859, this abandoned frontier town has appeared in several films.

This well-preserved Cistercian Abbey in a romantic pastoral setting has inspired artists like the poet Wordsworth.

A 70-foot-deep ice cave formed by lava from Mt. Fuji on the edge of Japan's "Suicide Forest." 

America's first federal monument.

A mammoth pair of Civil War artillery guns abandoned out in the forest.

This subterranean disco dance club in a Cuban cave comes with bright lights and a dark legend.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.