Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

A hand-built folk art installation covered with messages of God's love.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

This old residential building was once the largest flour mill in the world.

One of the world's premier laboratories for hydraulic engineering research takes full advantage of the water's power.

After the musical legend's death, his memorial was mysteriously graffitied in gold.

One of two giant blue cockerel statues erected with an intentional double meaning.

A museum dedicated to the exploring past, present, and future innovations.

Secret hideaway for an alternative beach experience.

A treehouse assailed by the elements and the government, now gone.

The drama of nature in full effect in this Nevada State Park.

The world’s largest truck stop includes a barber shop, chiropractor, and a huge museum with antique trucks.

A half-mile long and three stories high, this bridge over the Des Moines River Valley mimics a descent into a mine shaft.

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

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

The ghostly remains of an accidental sea.

A walk through the historic city center, under the streets of Seattle.

An abandoned vacation home spent a decade taking on legends. It's now taking on water.

The only arched bridge made of stone on the entire Mississippi River.

When flour explodes, it's not a pretty sight.

A toweringly silly piece of modern art has been delighting locals since the 1980s.

A whimsical sensor instrument for Minneapolitans to play on their walks to work.

20,000 pieces in a Frank Gehry-designed building.