A surprising museum of 20th-century technology.

One of New Jersey's oldest surviving buildings still bears the mark of our former British overlords.

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

This tiny structure was built by the creator of the Brooklyn Bridge.

This colonial mansion has been home to a staggering number of American historic figures.

The final resting place of two members of the infamous Doan gang, notorious outlaws and Revolutionary War Loyalists.

The residents of this ominous-sounding street in Pennsylvania liked its name so much they fought to keep it.

An unusual and eclectic collection of local historical memorabilia.

The first partially complete dinosaur skeleton was discovered here, forever changing the world's view of the ruling reptiles.

The final resting place of one of the United States's greatest poets.

The oldest active church in Pennsylvania is also the second oldest Swedish Church in the United States.

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

One of the largest sculpture collections in the U.K. features history's greats, from Bob Dylan to Galileo, in bronze.

A 6th-century stone lies at the site of the mythical battle waged between King Arthur and his nemesis Mordred.

A makeshift shrine to the late rock star is still kept up on the nondescript façade outside 1 Logan Place.

This gravestone and its inscription inspired a movement that has spanned generations and saved countless lives.

A remarkably opulent mansion with a tragic history.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

It was an experiment to prove that glacial boulders and rocks can be used in constructions and dwelling.

A neolithic dolmen that was rebuilt after collapsing during the 19th century.

This stone throne invites adventurers to observe breathtaking views of the Peak District.

A natural formation that resembles a camel resting in the New Mexico desert.

A unique arch graces the Dolores River Canyon near the Hanging Flume.

In the Shawnee National Forest, amazing rock formations peer through the treeline.