A source of civic pride, though the reason for its construction is unknown.

Even with its slightly risible name this colossal cross is still able to inspire awe.

This lush 12-acre site was once named the finest Japanese garden in North America.

The oldest house in Galena, Illinois, now is a reminder of when this city was the world's lead mining capital.

A mini Wrigley Field for mini baseball players.

The study has wall paneling from a 17th century ship.

An Art Deco gem that held together the artistic heart of an agricultural community for 92 years.

The young Black revolutionary was killed before getting to see a non-segregated pool in his hometown.

This simple gravestone remembers a pig who single-hoofedly raised $19,000,000 for the Navy.

The famous Beatle secretly visited this Illinois town several times to visit his sister.

This odd stone memorial remembers a loyal dog who offended the rail barons with his speed and saved his master with his pee.

The lowest point in the state of Illinois, at the confluence of the Mississippi and Ohio rivers.

This house renovated by Frank Lloyd Wright was the centerpiece of a lavish 20th-century estate.

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

The only place in America where anyone who wants can shovel coal aboard an antique train.

A tribute to one granddaughter's old apartment which now represents the whims of each visitor.

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

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

This family driveway also serves as the highest point in Illinois.

In a grove of fast growing walnut trees outside Paris, Illinois, a marker shares the story of a fictional road building culture.

A 30-foot man on a penny-farthing bicycle rides along the banks of the Mississippi.

The murals have transformed a residential alley into a vibrant drive-through gallery.

The carved remains of a 200-year-old oak tree memorialize the namesake of the iconic "Wizard of Oz" character.

A one-armed veteran of the Battle of Waterloo lies in a cemetery for one in the middle of a Chicago scrapyard.