An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

Historic Hull Street was actually the first street with a proper name in the Boston area.

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

This giant monument of the RCA mascot is a beloved fixture in Albany, New York.

America's original house of worship for Spiritualism, the religious movement based on communing with the dead.

Chicago's Navy Pier on Lake Michigan was a training hub for aircraft carrier pilots during WWII.

This supermarket is suspended 25 feet above an interstate highway.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

This old mill and former police station now present a world-class collection of Orthodox iconography.

Decades of discarded bottle caps line this alleyway, a fixture of Texas A&M.

Legend has it that President Grant’s frequent drinking in the lobby gave rise to the term “lobbyist.”

The second oldest Jewish graveyard in the U.S. is tiny, with connections to George Washington and Henry Wadsworth Longfellow.

Mysterious 500-year-old tapestries depict a unicorn hunt.

Beautiful mosaics cover the first stations opened on New York City's newest subway line.

Manhattan's lighthouse, erected at the insistence of the unsinkable Molly Brown.

For thousands of years, Native American hunters drove buffalo straight off this cliff in Montana's Yellowstone Country.

With over 340,000 artifacts and counting, there is something for everyone, often called the "Smithsonian of the West."

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

The hill that gave the Massachusett tribe, and later the state, its name.

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.

A 19th century library favored by Edgar Allan Poe and H.P. Lovecraft, known by locals as "the Ath."

Oldest synagogue in the United States.

On a former island, this old fortification once used to protect the Boston Area and started Edgar Allan Poe in his military career.

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