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

The atmospheric road was never meant to be so creepy.

Elevated freight railway turned wildly successful urban park.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Famously misunderstood wonder of the ancient world

Macabre astrological automaton clock dating to the late 1400s.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

The fairy tale castle of the "fairy-tale king."

The oldest playground in America.

This downtown Dallas art installation is always on the lookout.

'The Letters of Utrecht' lays out a ribbon of poetry one letter at a time, with no final verse in sight.

An Oxford museum where visitors can have tea with the Mad Hatter and climb through the wardrobe to a fantasy land.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

The California capital city once stood 10 feet lower than it does today.

A cavernous three-story, 43,800-square-foot basement that was forgotten about for 60 years.

A small village in two different countries.

There are plenty of wonderful panoramic vistas in Edinburgh, but not many are hidden smack in the middle of the Old Town.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

Spike Lee's provocative film is officially honored right where it was made, the first time a work of art was used as a secondary street name.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

Home to three historic ships from the age of Vikings.

Across the Pacific in a raft, a museum dedicated to Thor Heyerdahl's now legendary expedition.

The design of this beautifully crafted building was inspired by Norwegian glaciers.

The largest bottled beer collection in the world holds over 22,000 unique beer bottles.