These light, hollow rolls have been linked to Acadia National Park since the 1890s.

Oldest existing church in New York and the inspiration for Washington Irving's "The Legend of Sleepy Hollow."

This site honors the end of a 100-year boundary dispute between the United States and Mexico—all started by a river's shifting course.

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

A building so large that it has its own weather.

The Lowcountry color with the power to stop evil from entering a home.

A statue honoring 44 continuous years of greeting passing ships.

A particularly creepy abandoned hospital that sparks interest for lovers of the supernatural.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

Bizarre Cavern.

The smallest covered bridge in Maryland.

An eerie, decaying ghost town destined to fade into the forest.

This former asylum for Black Americans is haunted by its history of violence and racism.

The last remains of one of the oldest and largest oak trees in the United States calls this state park home.

The grounds of former plantations where abolitionist Harriet Tubman spent her youth enslaved are now a museum to her incredible life.

For decades, this waterfall remained hidden because of an artificial dam.

Designed to commemorate the founding of the first settlement in Delaware.

Sniff the Titan Arum's rotting flesh.

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

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

Created by a local artist, these quirky sculptures each have their own names and personalities.

A haunting exhibit in a wildlife refuge center highlights threatened species and the conservation efforts needed to save them.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

Rocky outcrops containing overhangs, caves, fissures, clefts, and alcoves that invite exploration and scrambling.