This 16-foot-diameter wooden coin has been standing in Iowa City since 2006.

A crumbling hospital from the 1850s on Roosevelt Island.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

Elevated freight railway turned wildly successful urban park.

This floating sculpture of ice is a poignant reminder of nature's power.

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

Longest road tunnel in the world features an air treatment plant and the illusion of daylight.

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.

A serpentine highway twists and turns over the treacherous Norwegian Sea.

Duluth mineral magnates built this charming art deco lodge to be their private clubhouse.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

A toweringly silly piece of modern art has been delighting locals since the 1980s.

Half of a waterfall goes into the river while the other half seems to disappear.

A bronze plaque marks the site of the only show the "King of the Soul Singers" ever missed.

Statue dedicated to the star of an old television show.

A place to eat for on-the-run agents and espionage enthusiasts.

Restaurant in Northern Wisconsin comes with a unique feature: a grassy roof covered in living goats.

This cave holds a surprisingly colorful variety of geological oddities.

This pebble beach is so beautiful that taking its rocks is against the law.

Vikings and Evangelicals have both had a hand in this replica medieval church.

A cemetery housing wild west legends in South Dakota.