The winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.

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

Obscure Freemasons still live in D.C.’s largest private residence.

This unacceptably tall building was the real reason for Washington, D.C.'s skyscraper ban.

A bas relief commemorates the "Nuns of the Battlefield" who cared for soldiers on both sides of the conflict.

Was there a small "backpack nuke" hidden in the attic? JFK apparently thought so.

The sculptor was instructed to add “stallion attributes” to the general's bronze mare.

Toxic waste disaster that founded the Superfund program.

Genesis of modern hydroelectric power.

Historical marker that is a mini replica of the original in New York.

One of “America’s Most Endangered Historic Places” is a building shaped like a giant turtle.

A monument to the “unrecognized dead” of the tragic 1876 train crash.

An oddities shop with incredible permanent displays on top of its collection of purchasable curiosities.

The heroic sled dog of the 1925 serum run is preserved in taxidermy.

This Rodin sculpture in Cleveland bears the lasting marks of a 1970 bombing.

The home made famous by the 1983 holiday classic is now a perfectly preserved shrine to the movie.

This Czar-funded, onion-domed, lavishly muraled Orthodox Church played a starring role in "The Deer Hunter."

A history of tragedy and a pile of eerie stories have contributed to this house's consistent ranking as one of the most haunted places in Ohio.

Abandoned since the 1950s, the streetcar lane beneath the heavily trafficked bridge lays empty and unused.

On the upper deck of this church-owned parking garage stand eight pillars topped with different Catholic saints.

A dazzling display of lights and crystals.

Marvel at this turn-of-the-century masterpiece that has been turned into a rather stately supermarket.

A bronze monument to Cleveland's favorite, fastest son.

Funded by John D. Rockefeller, this is one of the earliest, and most beautiful, shopping arcades in America.