A mysterious, abandoned building rotting on the Brooklyn waterfront.

A retired subway car stands alone in a field in the middle of Queens.

A 19th century hat factory still stands as a crumbling ruin in upstate New York.

A forgotten relic from New York's bygone trolley system hides in plain sight under a bridge.

This Buffalo museum hides an Art Deco gas station designed by Frank Lloyd Wright.

From horses to stainless-steel trucks, this iconic Providence burger wagon is one of the oldest mobile diners in the country.

A classic roadside attraction on Vermont's historic Route 5.

Etchings in a pile of boulders on the Long Island Sound are a monument to vanquished native peoples.

A tiny islet just off Long Island offers a wealth of infectious curiosities.

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

This unassuming Massachusetts residence was built with a trap door to hide escapees on the Underground Railroad.

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

This mysterious artificial cave has long puzzled New Englanders.

This rare symbol of Eastern philosophy in the West has been created over years of painstaking construction by the local community.

The former home of Samuel Clemens and family remembers the happiest period of the author's life.

This small-town Connecticut restaurant gives each diner a free book from its vast library.

This Connecticut chapel is a starkly modern, and surprisingly colorful, architectural rebel.

More than a century of radio history is told in these displays.

A former copper mine which became a truly unsuccessful prison.

A museum dedicated to the quirky and colorful world created by Springfield's favorite son.