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

A crumbling hospital from the 1850s on Roosevelt Island.

A semi-scholarly approach to sex.

The only castle in North America to ever house European sovereigns.

A museum in the former home of Marxist revolutionary Leon Trotsky.

Gilded heaven for philatelists and architecture freaks, still in full working order despite sitting atop tremulous ground.

A monumental cross hides in the trees in Golden Gate Park.

The key to turning shifting dunes into the green oasis of Golden Gate Park.

Shoot for par over the bodies of the dead on this cemetery-cum-golf course.

A classic advertising icon immortalized in regal bronze.

In this century-old literary safehouse, print is alive and well.

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

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

Sweden's "good old days" painstakingly re-created in a model village.

It houses the remains of a 17th-century version of the Titanic.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

Medicinal spa created with the discharge from a geothermal energy plant.

Faceless white figures loom over the city from the rooftop.

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

On a barren hillside in the Yucca Valley, the recently restored Desert Christ Park has attracted pilgrims and kitsch hunters for over 50 years.

A music-filled, booze-soaked oasis in the desert.