The world’s first penitentiary, meant to be humane, drove men insane.

The headquarters of the Fraternitas Rosae Crucis, complete with Rosicrucian pyramids, all in the Pennsylvania woods.

A smaller model of the Da Vinci sculpture that took 500 years to come to life.

This strange, big-tailed beast became a Pennsylvania town's unofficial mascot.

A pride of the state, this working museum crafts pottery mosaics in the style of Pennsylvania's earliest European settlers.

Eccentric concrete mansion and museum designed and built by hand from the inside out.

These 20-foot sculptures will help guide you from the local train station to the local sculpture garden.

A unique sculpture park that specializes in the huge and bizarre.

Step into Monet's world at this fine-dining restaurant in the middle of a New Jersey sculpture park.

A glittering Thai Buddhist temple in suburban Pennsylvania.

This giant disembodied horse head seems to balance impossibly on its nose.

The home of possibly the least-loved U.S. president stands as a sort of unpopular Monticello.

The oldest farmer's market in America is so ancient it was approved by the King of England.

Featuring the largest CinemaScope screen in Pennsylvania, this drive-in has entertained moviegoers for more than half a century.

What looks like a simple quaint estate in rural Pennsylvania was in the 18th century home to a small monastic community.

In this cemetery stands the country's first public crematorium.

Mysterious rocks that ring musically when struck.

A park full of outsider art, created by college students studying outsider art.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

A lush green oasis in the middle of Chicago.

This shop for all your super spy needs hides an educational secret.

Open since 1938, this diner has kept its fountain, malt machine, and all the gum that greasers left beneath its counter.

A geological mystery on Camelback Mountain.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.