A former major munitions plant that has been converted into a sprawling art space.

Founded by the famed children's book artist, this museum spreads an appreciation of the arts through picture books.

An iconic steel and chrome diner from the 1940s left empty for nearly 20 years is in danger of being demolished.

An overgrown and abandoned tuberculosis ward resides in the midst of a quaint modern neighborhood.

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

Life-size bronzes of the Grinch, Cat in the Hat, Yertle the Turtle, Sam-I-Am, and the Lorax—and the author himself.

The oldest operating apothecary in the US has treated everyone from Thomas Edison to Mark Twain.

Elevated freight railway turned wildly successful urban park.

Two large-scale sculptures of Adam and Eve greet visitors in the nude at the Time Warner Center in NYC.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

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

The oldest building in the District of Columbia was preserved because of a mistaken connection to George Washington.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

This urban oasis is a marvelous meld of music and landscape architecture.

One of the largest underground systems runs under Canada's largest urban center.

A much-maligned monument to teetotalism.

Sit where JFK proposed to Jackie or where Nixon dined on meatloaf at this storied pub.

The final resting place of the tragic king and queen of the Jazz Age is tucked away in a small Maryland graveyard.

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

Located at the former Lorton Prison the Lucy Burns Museum tells the story of the 91 year history of the prison including the dark chapter of its involvement in the women's suffrage movement.

A 60-room castle constructed by a horse-racing heir.

A railroad magnate's replica village has become home to a genetic seed bank for rare breeds of livestock.

Mysterious stone tower featured in many alternative histories of the New World.

The home of the artist credited with introducing the tomato to the American diet.