On the Oregon coast is a natural hole that seems to be draining the sea.

The Origin of On the Origin of Species.

Gothic tower where Lord Alfred Tennyson wrote the poem "The Sleeping Beauty."

Amazing collection of folly buildings in Cobham, Surrey.

The world's first purpose-built motor racetrack was destroyed by the outbreak of two world wars.

This medieval church is the only one in the world that features all Marc Chagall stained-glass windows.

This former abandoned hospital, a complex of stunning 19th century buildings, once housed 2,000 psychiatric patients.

The last resting place of the famous Native American princess is marked by a haunting monument.

Horsemen once used this tilting post during jousting practice.

A Neolithic burial site built 1,000 years before Stonehenge.

This foreboding medieval castle was twice besieged by barons rebelling against the English king.

An Elvis superfan built Denmark's own version of Graceland.

This museum is a portal to 20th-century Denmark.

A symbol for the opposition to nuclear power around the world.

The last Viking king of Denmark is buried inside the crypt of this cathedral.

This huge industrial sculpture looks like a UFO and a factory had a baby.

Denmark's famous pseudo-hill.

Generations have refused to move this doll from its dusty resting place to preserve a castle from a watery fate.

A public display of random paleontology.

Dozens of musicians have planted trees in this Danish park, and donated songs to go with them.

An old limestone mine transformed into a beautiful and unusual sculpture museum.

Denmark’s never-ending bridge.

Tiring of digging out the door to this church for every service, it was eventually abandoned to the sands.

Mounds, rune stones, and a 1,000-year-old church, left behind by Denmark's first two kings.