The trials and tribulations of marking Poe's grave.

This bug-eyed water wheel uses the power of the Sun to clean up Baltimore Harbor.

A toxic ghost town sitting atop a massive coal fire.

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

Toxic waste disaster that founded the Superfund program.

A beautiful multicolored mound formed by the mineral deposits of the Orenda Spring.

A Frankenstein blend of science and art allows one tree to produce 40 different types of stone fruit.

Dating back to the 1800s, two imposing buildings in Michigan have had countless transformations over the years.

A 30-year-old Sycamore tree grown from a seed taken to the moon and back.

A giant lumpy candle serves as a beacon for this highly scented pit stop.

At HopCat, a marker honors fictional creatures with the ability to travel the missing dimensions of Kcymaerxthaere.

Comprehensive gaming collection of over 30,000 electronic games and consoles.

Discovered by cows, these upstate New York show caves are presented with a healthy dose of psychedelic folk art.

The rusted remains of an ill-fated freighter lie just off the coast of South Manitou Island in Lake Michigan.

A charming remnant of 19th-century fishing towns sits on Michigan’s Leelanau Peninsula.

Home to over 300 antique cars and motorcycles, including Thomas Edison's Model A.

This exhibit allows visitors to wander through the interior of a replica Ice Age glacial cave.

It wouldn't be long after purchasing this farm, Brown would lead his siege on Harper's Ferry.

Dozens of houses in the Adirondack Mountains are reminders of a literal "cottage industry" to cure people of a deadly disease.

The abandoned ruins of America's first private zoo are open for exploration in the Catskills.

The dairy farm in upstate New York where nearly half a million people gathered for three days of peace and music in 1969.

A near tragic event on this bridge helped inspire the classic film "It's a Wonderful Life."

This statue commemorates the meeting of the most influential minds of the women’s rights movement.

This relic of 19th-century infrastructure is one of the few remaining coal gas storage tanks in the U.S.