The oldest house in Galena, Illinois, now is a reminder of when this city was the world's lead mining capital.

A massive bur oak tree believed to be some 500 years old is the centerpiece of this quiet urban greenspace.

This small-town park in southern Illinois has a 1,000,000-gallon swimming pool and a 100,000-barrel oil well.

This odd stone memorial remembers a loyal dog who offended the rail barons with his speed and saved his master with his pee.

Built in 1869, this now-retired structure looks more like a medieval fortress than a county lock-up.

This rare female version of the Muffler Man has its clothes removed each summer to signal the start of pool season.

In the Shawnee National Forest, amazing rock formations peer through the treeline.

Fresh wooden posts have been added to ancient holes to recreate a primitive henge clock.

The world's third-largest scale model of the planets.

The mysterious white squirrels of this Illinois city are treated like sacred cows.

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

The poet’s boyhood home is now dedicated to celebrating his life and legacy.

The empty tomb that houses the memories of Roy Bertelli's revenge.

One of the largest carillons in the world, this giant instrument has 67 cast-iron bells played by a keyboard.

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

This spectacular track has run continuously since 1882.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

There are eight natural springs around town, each with a slightly different taste.

This super steep hike ascends 2,000 feet in less than a mile.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

A priest with no formal artistic training used basic house paint to create gorgeous religious scenes inside this historic church.

The grand marquee of this abandoned Hawaiian theater remembers the building's elegant past.