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

A replica viking ship from the Chicago World's Fair is still in dry dock in an Illinois park.

Its eclectic exhibits range from the world’s first motorcycle to Luke Skywalker’s Land Speeder.

The birthplace of a titan of American cinema.

A mini Wrigley Field for mini baseball players.

Literally a million fascinating cartographic artifacts are held in this sprawling university collection.

Complex aquaponics systems allow fish and plants to grow in harmony.

The arboretum whose marshy soil sucked up the dreams of housing developers.

Where experiments are conducted on all things wood.

This forgotten beach house built to look like a Frank Lloyd Wright masterpiece overlooks a hidden beach.

Before he was America’s most famous preservationist, John Muir was an ingenious mechanical inventor.

The site of an ancient Mississippian settlement that appears to have flourished during the 10th to 13th centuries.

One of the largest aviation events in the world brings half a million aircraft enthusiasts to Wisconsin each year.