This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

A layered tribute to the work of mosaicist Isaiah Zagar.

This monumental sculpture that welcomes visitors to Bethany Beach is a tribute to a regional Nanticoke Indian Tribe leader.

An autonomous oak in Alabama.

This tiny, triangular block has held the world record since 1964.

Dothan, Alabama has been invaded by scores of anthropomorphic peanuts.

A mural honoring two trailblazing Supreme Court Justices—Thurgood Marshall and Ruth Bader Ginsburg.

This Harriet Tubman mural went viral for kids interacting with it.

Scary stories haunt this wooden bridge.

A charming tour of the umbrella, tin-can, and drinking-straw capital of the world.

These vibrant row houses are a unique example of Baltimore kitsch.

At the birthplace of American railroading, a world-class collection of historic trains.

This covered bridge was used by both Union and Confederate troops during the Battle of Gettysburg in 1863.

Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

Standing guard on top of an old, vacant ice cream shop.

A painted-over wall in Detroit originally built to segregate a black community from an adjacent white development.

To truly appreciate Detroit's landmark skyscraper, you have to step inside.

The Beaux-Arts aquarium boasts a vast collection of saltwater and freshwater fish on an island in the Detroit River.

The pile of books behind the dignified writer gave the statue a most undignified nickname.

Go inside to really appreciate this 500-year-old technological masterpiece.

100 year tradition of fist fights, marked by marble footsteps.

Those who own or stay at this 500-year-old, allegedly cursed house often meet terrible fates.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

Plaques on its facade commemorate the Tiber's most destructive deluges.