One of the now-less-hidden floral gems of the "Emerald Necklace."

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

The oldest Italian café in Boston, this spot also serves as a veritable museum of vintage coffee ephemera.

Dim sum, served in a grand old theater.

Two thousand artifacts from around the world collected by one woman who loved to travel.

Pittsburgh’s largest and most detailed model train display began as one WWI veteran’s hobby.

Color-coded signs direct drivers on a network of routes designed to avoid Pittsburgh traffic.

Tucked into Pittsburgh’s North Side, the Mattress Factory is a labyrinth of permanent, room-sized installations where artists transform entire spaces into mind-bending, immersive worlds.

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

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.

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

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

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!

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

A historic cider mill still using time-tested techniques.

It's been called “Detroit’s largest art object.”

This historic mill has been turning apples into delicious fresh cider for over a century.

Its floors are marked by colorful cues depicting Michigan's native fauna.

These dramatic cola-colored falls have appeared in a poem by Henry Wadsworth Longfellow and a song by Sufjan Stevens.

Lovingly nick-named the "Brick Dick" this municipal tower was winner of the World's Most Phallic Building Contest.

The 80-foot tire that looms over Michigan's I-94 was once a Ferris wheel in the New York World Fair.

Detroit’s Eastern Market has been transformed into an outdoor museum with colorful murals that address social issues and symbolize the city.

This railway-turned-greenway provides a pedestrian link in downtown Detroit and celebrates urban artwork.