The design of this historic domed church was influenced by Thomas Jefferson and intended as a statement of religious freedom.

A monumental statue of RCA's mascot now sits atop a historical society roof after a life of moving around.

An eerie, abandoned military base engulfed by nature and graffiti is now home to a local park.

Ship skeletons haunt Baltimore's waterways.

A 200-year-old bar with a cheeky name claims to have served Edgar Allan Poe his final drink.

The site where Poe "in great distress, and ... in need of immediate assistance" likely died.

The trials and tribulations of marking Poe's grave.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

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

This university transit system is a 1970's vision of the future.

The largest burial mound in the United States holds the remains of prehistoric West Virginians.

Beyond the usual stories that attend old prisons, this one has deep bloody undercurrents.

Despite its lavish ornamentation, and wholesome lifestyle of its devotees, this mountain commune has faced its share of issues.

The largest piece of cut lead crystal adorned a grave for 75 years and is now the shining star of a glass museum.

This abandoned dream castle and its cemetery look out over the city that once inspired their creation.

A private residence adorned with a gorgeous mural dedicated to the buzzing insect.

When oil was discovered just outside of Pittsburgh, the city became home to this regional stock market.

The last remnants of Fort Pitt also hold the distinction of being the oldest structure west of the Allegheny Mountains.

The god of wine stares out at passersby on this busy Pittsburgh thoroughfare.

Color-coded signs direct drivers on a network of routes designed to avoid Pittsburgh traffic.

This historic Pittsburgh tennis complex is a rare example of natural red clay courts.

This spot memorializes one of the greatest plays in NFL history, unless you happen to be a Raiders fan.

The largest clock face in the United States is twice the size of Big Ben and infinitely more ad-sponsored.

A portion of the old Pirates stadium over which a defining home run once flew still stands even after the rest of the stadium was torn down.