Now nearly abandoned, Kaskaskia was once the capital of Illinois and one of the most important towns on the upper Mississippi.

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

A museum dedicated to man's boldest venture.

The world's largest man-made underground caverns offer unparalleled underwater wonders.

Quirky water tower advertises the long-gone Brooks Tomato Products Co.

This life-size bronze statue remembers the tallest recorded human in his Illinois hometown.

An abandoned factory along the Mississippi coated by a giant mural.

A wax effigy of St. Valentine hides one of the saint's relics.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

Less a museum than a bizarre fantasy world created by artists and engineers.

The first rural cemetery west of the Mississippi is home to the elaborate tombs of St. Louis' local beer barons.

A historic house in St. Louis was plagued by a series of suicides committed by family members involved in a successful brewery.