The city of Rockford, Illinois is symbolically protected by a quartet of fittingly stony sentinels.

An exhibit of items from the mental institution where Mary Todd Lincoln lived after her son conspired to have her committed.

Burial mounds of prehistoric Native Americans who lived along the DuPage River.

This former nursery supplied plants for the creation of Chicago's largest park.

Almost all that remains of a town dedicated to supporting the First Transcontinental Railroad.

Stumps of an Ice Age forest, visible only at low tide.

A flamboyantly decorated bridge signals diversity and fellowship at the entry to Indianapolis' Broad Ripple Village.

Nature and art meet in this curvy creation

This botanical garden outside Chicago boasts an array of more than 300 varieties of lilacs.

Tucked away amongst townhomes lies a restored, early 20th-century tea house and garden, the only remains of a historic estate.

This bridge was constructed from the remains of the first Ferris wheel.