This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

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

In which a local geological marvel becomes a quaint roadside attraction.

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

The internal railway of one of the biggest steel plants in America has been transformed into a linear park with unique industrial views.

Originally conceived as part of a proposed Arizona State Capitol building in the 1950s, this structure built in 2004 stands as a monument to the architect's legacy.

At the largest railway museum in the United States, you can see everything from an early steam engine to a functioning Thomas the Tank Engine.

A 400-foot-tall tall map of Chicago makes this once-ignored building stand out.

The famous author's birthplace is preserved in a town that he once described as narrow-minded.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

Recognized the world over as the home of the McCallisters in the 1990 movie "Home Alone."

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

This museum collects over a century of automobile history including the iconic car from The Muppet Movie.

The evolution of recreational vehicles and motorhomes is on display in the “RV capital of the world."

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

The U.S. Navy's last diesel-electric submarine rests half-submerged in the middle of Portland.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

After this former brothel closed, its interior remained almost frozen in time.

The mayor made the declaration in 2004.

A classic carnival ride that was carved to be untouchable.

The only road through the heart of Glacier National Park.

This giant meditative chakra sits peacefully in the Flathead Valley of western Montana.