Memorials and tributes scattered across the university grounds remember a famous national tragedy of the Nixon era.

The only statue of its kind to commemorate Washington's beginnings as an officer of the British Colonial Militia.

Resonating tubes make music from highway overpass.

More than 200 unconventional musical instruments that anyone can play.

This abandoned neighborhood is now a park filled with beautiful trees, wildflowers, and hints of its past.

This giant, rotating globe was built to celebrate the expansion of a company that makes steam cleaners and pressure washers.

The site of the little-known Pennsylvania battle that sparked the Seven Years' War.

An American flag was erected for every day that passed during the Iranian Hostage Crisis.

Where the oil industry began.

"Where the ducks walk on fish."

The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

This impressive working clock made of 16,000 plants changes its flowers twice a year.

Toxic waste disaster that founded the Superfund program.

A museum dedicated to exhibiting remarkable outsider art.

The site where Poe “in great distress, and ... in need of immediate assistance” likely died.

Public opinion is still divided on this enormous sculpture in front of Baltimore's Penn Station.

This beloved Baltimore spot features caged dolls, a giant Pez collection, and many, many mannequins.

A pyramid commemorates the birthplace of James Buchanan, the 15th president of the United States

A failed piece of Orientalism has become the proud symbol of a community.

A mine fire has been burning under the deserted town since 1962, but this church is still going strong.

A toxic ghost town sitting atop a massive coal fire.

A eight-foot-tall statue resides in the heart of Pennsylvania anthracite coal country.

An indoor miniature village and labor of love for Laurence Geiringer, a model railroad enthusiast.

The first of Lancaster's "rural cemeteries."