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

Where the U.S. government kept its actual treasure, before Fort Knox.

Light bulbs, scrap wood, and tinfoil comprise this homemade throne of the gods.

The "lovely red Vega" of the legendary record-settling pilot.

A three-story tower of books about Abraham Lincoln is one of the more unusual monuments to the president.

This lonely waterfront memorial to the men of the Titanic was erected by the "Women of America."

A painfully obvious spy house sits right across the street from the Russian Embassy.

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

The site of the climactic scene from the classic horror film is now a historic landmark.

The United States Capitol's former columns still stand.

A historic neighborhood church is reborn as a psychedelic arts collective.

An enormous park-like oasis, full of famous Chicagoans' graves.

A lush green oasis in the middle of Chicago.

A Bibliophile's Dream.

A giant bronze coil of feces is both a tribute to doggie defecation and a reminder to pick it up.

Remnants of a storybook amusement park hidden behind a strip mall.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

The last of Philadelphia's wood-paved streets is now a landmark of terrible engineering.

This sculpture of a fisherman spent six years at the bottom of the Schuylkill River.

A legendary boxing venue and ring featured in Rocky V.

Alexander Hamilton’s creation caused quite a bit of controversy.

An Irish Memorial commemorating those who perished due to potato blight.

South Philadelphia is home to Keith Haring's only surviving in situ collaborative public mural.