A castle built by an eccentric medieval enthusiast in rural Ohio.

Rare recess caves fill this unbelievably beautiful Ohio park.

What was once the largest NFL stadium.

Week-long festival in the baby food capital of the world.

The park is home to the United States's only still-operating Dutch windmill.

An unlikely beach paradise of giant sand dunes lies between two lakes just a few minutes from Michigan's cherry country.

Priceless space junk on display in front of a local Dairy Queen.

Home of the only civilian casualty at the Battle of Gettysburg.

An abandoned railroad tunnel transformed into a creepy path for hikers and cyclists.

Antiques and recycled art surround this cabin designed to resemble a 19th-century schoolhouse.

An American flag was erected for every day that passed during the Iranian Hostage Crisis.

An eccentric priest's tribute to George Washington, this chapel tells the story of the American Revolution.

"Where the ducks walk on fish."

The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

There aren't too many operational funiculars around, but Pittsburgh has two!

A failed piece of Orientalism has become the proud symbol of a community.

This public space is speckled with the eerie remnants of a defunct amusement park.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

Thirteen pastel palaces in downtown Charleston add a gorgeous splash of color to the city.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

Heron, whitewater rapids, and urban industrialism all add to the beauty of this concrete nature walk.

Exact replica of the ancient monument, but much, much lighter.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.