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

The world's longest known cave system.

The longest and widest floating bridge in the world.

The small town of Poulsbo in Washington state is the next best thing to the Kingdom of Norway.

This famous bridge twisted itself into oblivion, but not for the reason you might think.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Once a private collection, now the only museum of arms and armor in the Western Hemisphere - CLOSED.

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

"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."

Inspiring Herman Melville and Henry David Thoreau, Mount Greylock in western Massachusetts is the highest point in the state at 3,491 feet above sea level.

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

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

The only structure left with direct ties to the Salem witchcraft trials of 1692.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

This national park on the shore of Lake Michigan features remarkable dunes that lie at the heart of a Chippewa legend.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

A walk through the historic city center, under the streets of Seattle.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

Every equinox this Maya pyramid puts on a spooky ancient light show.

The capital of the Cayman Islands is a center of offshore banking, but gets battered by blistering hurricanes.

Send a postcard while vacationing with Satan.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.