The Pentagon is so large that it was planned like a city, complete with internal highway infrastructure.

The romance of early commercial flight still fills this Art Deco destination.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

This stately building in Alexandria, Virginia was built by Freemasons to honor one of their most famous members.

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

A recreated sign from the movie Jumanji has become a makeshift tribute to the film's late star.

The story behind the mysterious symbol painted in front of the historic university's famous Rotunda.

World's largest Christmas store.

Trade in that pesky human soul for cold-hard circuits.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

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

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 take-out restaurant that only serves cuisine from countries with which the United States is in conflict.

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

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

Sections of the iconic limestone columns have been left uncleaned as a reminder of the city's polluted past.

Once the most painted on object in the world, this short campus fence is well on its way to being so again.

Steepest flood safety railway in the entire world.

Memorializing an American tragedy of massive proportions.

This outdoor gallery of graffiti-covered walls pays homage to the past, present, and possible future of street art.

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

The most confusing clock in New York.

A Yiddish theater turned movie house turned rock and roll landmark turned gay disco turned bank.