The park is home to the United States's only still-operating Dutch windmill.

The last occupied troglodyte dwellings in England weren't abandoned until the 1960s.

One of two lighted lanterns hung in the church belfry on the eve of the Revolutionary War to warn that the British were on their way.

An underwater city for the dead.

This spectacular track has run continuously since 1882.

This small town Texas cemetery is said to be the burial site of a UFO pilot who crashed in the 1800s.

The remains of a World War II-era Japanese American internment camp dot a windswept Colorado hill.

Once a lonely sentinel on the edge of the Great Plains, this rebuilt trading fort offers a glimpse of life on the Santa Fe Trail.

Self-built house and sculpture park where the creator can still be seen in a glass coffin.

A whimsical monument marks the highest point in Kansas, not that you could tell by the looks of it.

The largest dinosaur trackway in North America is tucked away among this canyon's ghosts and archaeological gems.

The fictional star of "Breaking Bad" is memorialized with a real-life gravestone in his hometown.

This unusual rock looks like a giant, otherworldly mushroom sprouting atop a cave.

Scotland still bears an enormous scar of its Roman past.

The rusted remains of an ill-fated freighter lie just off the coast of South Manitou Island in Lake Michigan.

This natural wonderland is a unique chance to explore a Carolina bay, a mysterious geological formation of unknown origin.

According to local lore, this narrow passageway through two large rocks was accidentally created by the devil himself.

The first custom-designed building to showcase the works of Dale Chihuly is a wonderland of glass and light.

An essential stop before plundering, BYO Cutlass.

A chain of bells connect the California Missions and honor the legend of the "King’s Highway."

Thousands of migrating monarchs overwinter clustered amongst the eucalyptus trees.

A partial tunnel blasted into a steep ridge is all that remains of a failed railway across Arizona.

Thousands of acres of beautiful wild landscape in the Great Basin.

This arts and culture cultural center explores the diverse cultural heritage of the American West.