Beautiful stained glass depictions of the history of human flight fill this surprising chapel.

This anonymous businessman sculpted in bronze became an enduring memorial after 9/11, and had been mistaken by rescue workers for a survivor in the rubble.

You must take the A train... to the last active cemetery in Manhattan.

This Manhattan museum houses one of the largest collections of Spanish art and manuscripts outside of Spain.

The home of possibly the least-loved U.S. president stands as a sort of unpopular Monticello.

There are owls with glowing eyes in Herald Square.

Haunted Victorian house that inspired a legendary "Ghostbusters" court ruling.

The final resting place of many of New Jersey's most famous residents, including U.S. history's most in-vogue antagonist, Aaron Burr.

A remnant from the golden age of aviation still in use today, Pan Am's Clipper service took off from this Art Deco gem.

The one-time epicenter of American songwriting is now a little remembered Manhattan commercial block.

These unassuming lighthouses have seen the first reading of the Pledge of Allegiance, the first wireless transmission, and more than one mystery.

The preamble to the U.S. Constitution written entirely from vanity license plates hangs in the Smithsonian museum.

A crumbling staircase in upper Manhattan is all that remains of one of the most important sites in sports history.

American involvement in World War I officially ended in 1921 in New Jersey, three years late and thousands of miles from the battlefield.

This small New York museum celebrates the mountainous artwork of a Russian mystic.

A decommissioned military complex that's now a modern industrial park.

The highest point in New Jersey is marked by a massive, if simply named, obelisk.

Possible relics of the ancient Roman city are hidden in this restaurant's façade.

Golden and naked, the figure that was once the highest point in New York is all that remains of the second Madison Square Garden.

The Hudson River School comes alive at this palatial estate.

A plaque immortalizes the spot where the early American spy said his famous last words: "I only regret that I have but one life to lose for my country."

One of America's most historic homes also holds a startling literary legacy.

A famous songsmith's custom piano, dubbed "High Society," is hidden just out of sight in one of New York's finest hotels.

The first "Hall of Fame" in America was designed by legendary Gilded Age architect Stanford White for what was then the NYU uptown campus.