A historic arena where the Beatles played their first concert in the U.S.

While most wind tunnels test scale models, the "Cave of Winds" was large enough for actual airplanes.

D.C. once had its own tiny rival to the New York Stock Exchange.

Once a sewer culvert, this road tunnel now offers cyclists and pedestrians a subterranean stroll under the C&O Canal.

Coins and medals straight from the mint await visitors to this shop in the nation's capital.

One of the three perfect vellum copies of this historic book known to exist is on display in a specially-designed case.

The only female equestrian statue in Washington, D.C. is a 15th-century French heroine.

After James Madison's death, his wife and former First Lady Dolley Madison lived in this yellow building near the White House.

In an alcove of this historic library, you can find murals painted in the 1930s by an artist who went on to create some of Disney's most iconic animated films.

A gift from Japan, 17th-century lantern stands among the cherry trees at D.C.'s Tidal Basin.

A glimpse of the Pacific Northwest‘s indigenous culture in Washington, D.C.

A small park honors the legendary Ukrainian poet.

A terrace reminiscent of Rome's Spanish Steps is tucked away in a little park in Washington, D.C.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

Once the site of the Hawaiian monarchy, this building was originally designed as a palace.

During the solar phenomenon "Lahaina Noon" this bendy, curvy sculpture forms a perfectly circular shadow on the ground.

The only airport with a people mover system designed by Walt Disney Imagineering.

In Houston's airport, a cow is properly equipped to jump over the moon.

This fast-food outlet is the only space and UFO-themed McDonalds in the world.

One man handcrafts "the best sake made outside of Japan" in a tiny desert town on Route 66.

This Route 66 classic sports a giant fiberglass rabbit that you can ride.

One of the final grand railway depot hotel complexes is slowly being restored to its former glory.

This public square capitalized on a single Eagles reference to bring some life back to an Arizona town.

This small interfaith chapel lies not far from the rim of the Grand Canyon.