A field of nothing but boulders which resembles a giant's gravel driveway.

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

The beloved, war-tested mascot of a Union regiment graces their battlefield monument.

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

A diorama of the Civil War, fought by cats.

Home of the only civilian casualty at the Battle of Gettysburg.

This massive sycamore tree has been labeled as one of the largest in the state.

Easter in Westminster may be the only time and place to behold Edgar Allen Poe made entirely of Marshmallow Peeps.

The oldest farmer's market in America is so ancient it was approved by the King of England.

This Maryland farm is known for its amazing corn mazes and its 30-foot junkbots.

The slate extracted from these Pennsylvania quarries was once hailed as the finest in the world.

This stately 19th century library pushed architectural boundaries at a time when the public library movement was just taking off.

A small museum along the Susquehanna River is home to a rich collection of Native American artifacts.

The first of Lancaster's "rural cemeteries."

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

"X" marks the spot of an echo chamber in the middle of a plaza.

A statue honoring 44 continuous years of greeting passing ships.

Paths are maintained, but trees have taken over plots.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

During the solar phenomenon "Lahaina Noon" this bendy, curvy sculpture forms a perfectly circular shadow on the ground.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

The Cold War-era "underground Pentagon" is a sprawling subterranean hideaway for the Defense Department.