One of the few remaining monuments dedicated to South Boston's Irish heritage.

The oldest surviving presidential residence in the United States.

America's smallest national park site is the former residence of exiled Polish national hero Thaddeus Kosciuszko.

Erected in 1697 this Philadelphia bridge is the oldest surviving roadway bridge and perhaps the oldest stone bridge in the United States.

This Philly landmark has a giant butterfly pavilion, three floors of insect displays, and withstood a $40,000 heist.

Dr Barnes' $25 billion private collection of art and arboretum.

The taxidermied remains of Charles Dickens' pet raven, which helped inspire one of Edgar Allan Poe's most famous poems.

This strangely amalgamated museum explores the history of the Timex clock company as well as archaeology.

A small museum packed with specimens from important fossil sites and minerals from historical pegmatite quarries.

A Yale University president wears full samurai garb in one of America’s oldest cemeteries.

This petite park lets visitors see and touch examples of fossilized dinosaur tracks.

This museum holds a fully-functional replica of the "Turtle," the first American submarine ever built.

Thousands of American timepieces on display in the former clock-making capital of the country.

A lone tower rises above the cliffs in a city park, offering fantastic views of the Connecticut landscape.

Connecticut's shot tower is near the end of its life.

This historic railway museum may have lost its passengers but not its love for trains.

A parade of antique steeds offers a quirky ride through history.

The US Navy's only submarine museum is also home to the world's first nuclear submarine.

The ruins of an abandoned 18th-century town that is slowly being reclaimed by the forest.

This "thrice-cursed" island is allegedly home to Captain Kidd's lost treasure.

Holding multiple historical boats and an entire 19th century village, this New England attraction is the largest maritime museum in the world.

An iconic steel and chrome diner from the 1940s left empty for nearly 20 years is in danger of being demolished.

The ancient past meets the retro-future at these dinosaur tracks that are protected by a geodesic dome.

The kind of mixed-up place that drives archaeologists crazy.