A forgotten sea village stands silent after hurricanes deemed it obsolete.

The North Carolina grounds are leased in perpetuity to the British Commonwealth for as long as the WWII sailors are buried there.

This historic sunny-yellow building has an unfortunate connection to the sinking of the Titanic.

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

The only intersection in America where the buildings on all four corners were built pre-Revolutionary War.

This abandoned ironworks was once the most important military supplier in America.

The remains of the furnace and iron works that produced the massive Hudson River Chain still stand in the woods of New York.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

The oldest continuously inhabited street in America.

This stone gatehouse was once the entrance to a historic mountain resort, and it had a cameo in a cheesy cult horror movie.

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

A hidden piece of Altoona's railroad history in a long-forgotten abandoned town.

Descendants of this colonial Pennsylvania family still travel from far and wide to visit the 300-year-old home of their Quaker ancestors.

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

One of the oldest Catholic churches in the U.S., situated just east of Gettysburg.

Where the oil industry began.

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

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

The famous bell was secreted away and hidden in a church in Allentown during the British occupation of Philadelphia.

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

What looks like a simple quaint estate in rural Pennsylvania was in the 18th century home to a small monastic community.

A pride of the state, this working museum crafts pottery mosaics in the style of Pennsylvania's earliest European settlers.

This hidden gem of a garden has one of the only surviving Victorian ferneries in America.

A museum dedicated to the history & joys of the trail & your best chance to see hikers throwing up ice cream.