This cathedral dedicated to Louis IX, sainted King of France, holds many secrets.

The oldest operational cathedral in the U.S. has one shell of a way of projecting speakers' voices.

In Buggy Town, USA, step back in time at this former buggy factory, where the Heiss family produced the coaches of the late 1800s.

This beloved ice cream shop raises its own cows to ensure the highest quality dairy products.

This oldest brewery in the U.S. has lived through fire, Prohibition, and six generations of family ownership.

This unique creation was made by the largest manufacturer of Christmas bulbs in 1946 to honor those returning from World War II.

This vintage short line in Amish country runs passenger steam train excursions and still hauls freight.

A former plant in one of the hubs of U.S. steelmaking has been turned into this museum celebrating the history of American industry.

A museum and research center dedicated to preserving the history of Rolls-Royce and Bentley motorcars.

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

Don't get it twisted: This is the oldest pretzel bakery in the United States.

A local prank turned town icon.

The state's only comprehensive museum dedicated to the mineral that defined its history and economy.

This is one really big nut.

Home to an eclectic collection of over 200 vintage motorcycles, Americana, and some of the most extraordinary antiques from all around the world.

"Where the ducks walk on fish."

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

Nine of the very few concrete ships ever made in the U.S. are beautifully decaying off a Virginia pier.

These unusual rooms on wheels are holdovers from the 1960s.

This refurbished gas station is one of the oldest in Texas, located on the original Route 66.

The folks at the Devil's Rope Museum want you to get hooked on barbed wire history.

This water tower slanted at an uncomfortable angle off the old Route 66 was an ingenious marketing ploy.

Once in disrepair, this popular Texas stop along iconic Route 66 has been restored to its past glory.

The spectacular collection of one of the world's best woodcarvers.