Outdoor exhibits explore the contributions of European, African, and indigenous peoples to American frontier culture.

An innovative attempt to break a siege in the American Civil War still scars the earth today.

This 29-ton granite ball spins around at the slightest touch thanks to a scientific phenomenon.

This historic, one-acre island is the only legal place to camp in the city of Richmond.

Edgar Allan Poe's old dorm is now a shrine to the author's legacy.

Hidden for 165 years inside a building designed by Thomas Jefferson are the remains of what may be America's first educational chemistry lab.

A former mental hospital founded in the 1930s by a eugenicist who advocated for the forced sterilization of patients.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

Perhaps the most scandalous statue of America's first president.

Northern Ireland's Brobdingnagian stepping stones.

This short bridge is the only thing connecting a tiny Irish island to the mainland.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

The modern birthplace of Irish freedom.

This Neolithic passage tomb forms part of a World Heritage Site.

The ancient tomb acts as a calendar that keeps perfect time.

The oldest pub in Ireland may also be the oldest surviving bar in the entire world.

The story behind the mysterious symbol painted in front of the historic university's famous Rotunda.