An ancient Viking village in North America that predates Columbus by 500 years.

Kentucky, Tennessee, and Virginia meet at this point in the Cumberland Gap.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

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

"the sweltering inhabitants of Charleston and New Orleans, of Madras and Bombay and Calcutta, drink at my well . . . The pure Walden water is mingled with the sacred water of the Ganges."

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

The site of Paul Revere's historic two lantern warning.

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

A favorite of Amelia Earhart, ranking among those rare bridges that can be crossed without changing sides of the river.

An office built to look like a giant basket.

The world's longest known cave system.

After a water tower painting was accused of being an ad, a simple fix was made that gave the city a motto.

This huge clock made of flowers and simple machinery was once used a political weapon.

The Beaux-Arts aquarium boasts a vast collection of saltwater and freshwater fish on an island in the Detroit River.

This burger joint is named after everyone's favorite carnival prize and is adorned with a giant one over the door.

Largest tulip festival in America, includes fireworks, a parade, and a carnival.

One lonely, modern pyramid has gone from corporate think tank to deserted boondoggle.

Hell on Earth is actually a small town in Michigan where anyone can be mayor for a day.

The only surviving prototype for Buckminster Fuller's house of the future.

A sealed test tube said to hold Thomas Edison's dying breath was given to the inventor's friend and mentee, Henry Ford.