Hidden in Central Park's Ramble is a troublesome cave buried just beneath the surface.

Try not to get slimed in Tribeca.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

These light, hollow rolls have been linked to Acadia National Park since the 1890s.

The only remaining historic maritime signal station in the United States.

Accessible only by boat, this centuries-old island fort never saw troops or combat.

A collection of birdhouses await curious motorists and avian squatters.

A mural of a boy making a phone call connects a southern Maine community to a town in Iraq.

Built for television, this statue now serves as an unlikely memorial to a fireman who died on 9/11.

A decidedly out of place statue memorializes the Blues Brothers characters at this water bottling plant.

This candy-striped tower is the farthest east you can go in the United States.

A monument marks the beginning of the longest north-south road in the United States.

This uninhabited island in Maine is home to various works of art left by visitors over the years.

This 19th century granite fortification is one of the most well preserved forts in New England.

This Maine bridge may be the last wire-supported bridge of its type in the world.

The highest point in Maine is a grand gift to the state citizens that also happens to be one end of the Appalachian Trail.

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

This museum shines a light on the true Pilgrim experience in North America.

This tower commemorates the spot where George Washington hoisted the Grand Union flag.

These three lighthouses played a fundamental role in the maritime life of Eastham.

Whimsical cookie-themed plaques mark the birthplace of the Fig Newton.

A pig barn converted into one of the most eclectic residences in Nantucket.