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

Herbert Hoover's "Brown House" rural presidential retreat was a PR disaster amid the start of the Great Depression.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

A building so large that it has its own weather.

The final resting place of soldiers' loyal canine companions.

A six-ton wedding present for the King of the Scots.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

While only two of the ancient buildings at this site are actually churches this was one of the earliest Irish pilgrimage sites ever.

A diminutive, thousand-year-old church believed to be the smallest in Ireland.

An Iron Age fort on the edge of a seaside cliff offers a glimpse into an ancient, mystical world.

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

Experience what life was like in Ireland during the Viking and medieval ages.

Experience the hysteria of a 17th century witch hunt through goofy reenactments and wax dummies that should probably be burned at the stake.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

Dedicated to one of the darkest moments in Irish history, this memorial has faced its fair share of backlash.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

This "life-size" depiction of Mickey Mouse as a half-lobster is both whimsical and a bit creepy, standing guard over the Boston waterfront.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

An easy-to-miss garden in Boston's North End honors the mother of JFK and others who lost children in WWII.

Three and a half miles of cliffs, rocky beaches, Gilded Age mansions and 40 Steps to nowhere in particular.

The cave where two British judges hid in exile after sentencing the king to death.

Panoramic views of the city of New Haven and the Long Island Sound, with a side of history.