This steep-walled ravine contains animal-shaped formations made from sandstone.

The remains of a enormous earthen figure of unknown origins cuts across a rural Wisconsin road.

The arboretum whose marshy soil sucked up the dreams of housing developers.

A largely forgotten and touching neoclassical marble fountain overlooking a bear mound effigy.

The only thing these street signs will help you navigate is your imagination.

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

Old neon signs from the City of Brotherly Love provide a snapshot of the city’s evolution.

One of the oldest of its kind.

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

The singer, actor, and activist lived here during his final years, and now it’s a museum dedicated to his legacy.

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

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

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

Hidden behind West Philadelphia rowhomes is a haven for migratory and local bird species both ordinary and rare.

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

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

Yo, Adrian!

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

This elaborate towering structure was once famed for its revolutionary height.

Step into a pastel time capsule where candy is truly dandy.

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

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

Instruments, apparatus, and rare books all relating to chemistry and its related sciences.

One of Philadelphia's largest murals resides hidden under this bridge.