More than 5,000 contemporary and "historic" mustards from around the world.

A metal ring in the middle of the road marks the exact spot where the Soviet satellite crash-landed in 1962.

This cave holds a surprisingly colorful variety of geological oddities.

Wisconsin's most celebrated export gets the royal treatment on I-94.

Inside houses a vast collection of military aircraft and missiles spanning the ages.

This steamer is known as "The ship that built Cleveland."

The world's tallest doric column is this Ohio monument to a naval victory in the War of 1812.

The 25th President's marble casket can be visited in this classical Ohio tomb.

Mausoleums, astronomy, and animatronic dinosaurs at this memorial to an assassinated American president.

You can walk through the first Boeing Air Force One, which famously carried JFK's casket from Dallas back to D.C.

The only presidential monument to display a late POTUS's actual casket.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

The heroic sled dog of the 1925 serum run is preserved in taxidermy.

Deep scars on the earth left by the Ice Age.

The oldest continually operating golf course in the United States.

"Where the ducks walk on fish."

Memorializing an American tragedy of massive proportions.

A small museum along the Susquehanna River is home to a rich collection of Native American artifacts.

A quirky collection of outsider art made from automobile parts.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

This collection honors the iconic, and proudly American lighter that just won't quit.

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

A tradition unlike any other, this marks the site of the annual Groundhog's Day tradition.

The body of St. John Neumann and his collection of hundreds of relics, on display in a Philly church.