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

This historic park site contains the last remnants of a once bustling canal system.

Public outcry led to this bridge's unique character which celebrates a giant frog battle and also sewing.

An easy-to-miss plaque marks the building that first held this 19th-century telephone innovation.

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

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

The author of Uncle Tom's Cabin was neighbors with Mark Twain while living in this Connecticut home.

An abandoned gun-funded 19th century utopia.

The oldest place in Hartford is a cemetery with thousands of bodies stacked beneath the grass.

These etchings reveal the history of a long-gone quarantine site.

An abandoned Depression-era zoo hidden just off the highway.

The "possessed" house that inspired "The Haunting in Connecticut" book and movie.

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

A museum designed by and dedicated to P.T. Barnum in the town where he is buried.

While many places make the claim, the Library of Congress says this restaurant is the birthplace of the hamburger.

A wunderkammer hidden on the top floor of the Hartford statehouse.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

While most wind tunnels test scale models, the "Cave of Winds" was large enough for actual airplanes.

Senators used to relax in the nearly forgotten marble tubs now hidden in the U.S. Capitol Building's basement.

Home to a vast and influential collection of Shakespeareana.

A little marble compass above George Washington's (empty) tomb in the Capitol marks where D.C.'s four quadrants intersect.

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

The "lovely red Vega" of the legendary record-settling pilot.

Home to items never before seen by the public.