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

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

The mortal remains of a Russian prince, priest and paranormal investigator who came to America in 1792.

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

This Pennsylvania cave holds evidence of the oldest known inhabitants of North America.

The world's largest collection of materials relating to lesbian history is housed in a Brooklyn townhouse.

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

This small New York museum celebrates the mountainous artwork of a Russian mystic.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.