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

A promising candidate for the lost rock laid by George Washington was unearthed, but the hunt is still on.

Corn-inthian columns with a uniquely American take on neoclassical architecture.

A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

An easily overlooked memorial to a Ukrainian famine-genocide that killed over 4 million people.

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

A rotating cast of guys and dolls in front of a Washington, D.C. building.

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

The oldest of only three existing statues of the great novelist stands in a city he did not care for.

The oldest active church in Pennsylvania is also the second oldest Swedish Church in the United States.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

The humble field where the first Major League Baseball game was played.

Contrary to popular belief, this secluded statue doesn't represent Pennsylvania's founder.

This forgotten building was one of the few Philadelphia-area breweries to survive Prohibition.

A museum dedicated to the strange and extravagant costumes and memorabilia of the mummers, a tradition older than Philadelphia itself.

This Delaware River bridge is emblazoned with a catty slogan from a more prosperous time.

A portion of the old Pirates stadium over which a defining home run once flew still stands even after the rest of the stadium was torn down.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

Board a mine car and descend the #190 slope 300 feet underground into the Clark Vein of coal.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

There aren't too many operational funiculars around, but Pittsburgh has two!

Pennsylvanian mass grave and possibly mass murder.

A mine fire has been burning under the deserted town since 1962, but this church is still going strong.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.