Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

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

This tea house was a hand-built gift from Boulder's sister city in Tajikstan.

This historic early-20th-century building still boasts some of its original features.

A 16th-century castle unexpectedly nestled within a post-war housing development.

At a mile long, the Fort Madison Bridge is the largest double-decker swing-span bridge in the world.

A wonderland of caves in eastern Iowa.

An underground wonderland in Iowa.

An unlikely Transcendental Meditation haven in the American Heartland built around the ancient Vedic principles of balance and harmony.

This long unused shot tower on the Mississippi remains a point of pride for a small city in Iowa.

The “American Gothic" artist's largest works hang in an Iowa State University library.

A pop-culture attraction outside of Dyersville, Iowa, hits a home run.

For just a few bucks, this Iowa funicular will let you feel like an 1800s fat cat.

A number of gruesome unsolved murders have turned this simple home into a morbid tourist trap.

What was once a communal kitchen now serves heaping portions of hearty German fare.

Sambusas get a Deep Southern twist at this Somali chai haven.

Grant Wood painted some of his most famous works of art at this studio.

One of just a few cities in the world to base their center of government on an island. Others: Paris and Osaka.

Step back in time while shopping inside this local store.

Over 600 acres of idyllic open grassland honor Nebraska’s georgic storyteller.

Storage units with a wartime past.

A rancher expanding a natural spring for his cattle came up with bones – lots and lots of them.

This once rural mansion now sits in the heart of the city.