An 18th-century Spanish watchtower made entirely of seashell and concrete.

Rat sculptures try to infiltrate the Graybar Building in an architectural tribute to New York City's nautical history.

The remnants of Peoria's proud baseball past stand slightly abandoned, but not forgotten.

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

This majestic tree has survived 400 years of storms, droughts, and floods, and is a beloved natural landmark in Missouri.

Like Stonehenge, but with boats and oodles more charm.

The modest, restored home of the legendary ragtime musician John William "Blind" Boone.

Abraham Lincoln's likeness rests at the top of this giant totem pole.

First known as the "Sample House," this construction mash-up was meant to be a living catalogue of building styles.

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