Experience the pivotal Civil War battle at this interactive museum.

Remember and reflect at this 9/11 memorial site.

A well-preserved example of an early industrial operation in the northeastern United States.

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

Memorializing an American tragedy of massive proportions.

America’s smallest national park site is the former residence of exiled Polish national hero Thaddeus Kosciuszko.

An outlandish shoe shaped house built by an eccentric millionaire.

This titanic java kettle is one of the many kitschy landmarks located along America's OTHER famous highway.

Yo, Adrian!

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

A pair of black granite tails dive into a sea of grass in landlocked Vermont.

The world's tallest doric column is this Ohio monument to a naval victory in the War of 1812.

Featuring one of the most complete and original collections of Presidential memorabilia, this is the site of the last front porch presidential campaigns.

This presidential tomb was not dedicated until years after Harding's death due to personal controversy.

This weeping, 10-foot-tall sculpture was a maquette for a 9/11 memorial.

The home of the founder of American landscape architecture puts his principles into practice.

Former home of an abolitionist couple who escaped slavery and established the most active Underground Railroad stop in Boston.

This bronze sculpture was inspired by a photograph of Martin Luther King Jr. and his wife embracing after he won the Nobel Peace Prize.

The largest collection of historic military firearms in the United States.

This impressive Boston holy house is the American mecca for Christian scientists.

Dedicated to one of the darkest moments in Irish history.

One of America's most historic homes also holds a startling literary legacy.

A simple but powerful tribute to the 20 victims of the 1692 witch trials.