This Delaware River bridge is emblazoned with a catty slogan from a more prosperous time.

Political activist and writer Thomas Paine once lodged at this location.

Beautiful views of the surrounding hills and birds of prey can be found at this sanctuary.

The home of possibly the least-loved U.S. president stands as a sort of unpopular Monticello.

The world's largest Holstein cow.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

This square in downtown Eugene is dedicated to the novelist and countercultural figure Ken Kesey.

Sports history, made in the Arroyo Seco.

One of the largest Buddhist communities in the West sits on the site of an old hospital.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

Heron, whitewater rapids, and urban industrialism all add to the beauty of this concrete nature walk.

This advertisement for talcum powder was painted on the rock face and has since defied removal.

Built in the 1850s, this church was of the first five churches constructed in Harper's Ferry.

This shale formation along the Appalachian Trail once inspired the third president of the United States.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

This futuristic bridge is one of the longest self-anchored pedestrian bridges in the world.

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

One of the last remaining World War II Victory Gardens in the U.S. is quietly growing across from Fenway Park.

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

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

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

The Boston square dedicated to the dark poet who was born nearby.

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