The great Floral Clock, 112 feet in diameter, was a popular exhibit on a hillside near the Palace of Agriculture. The thousands of flowering plants on the clock’s face were 'timed' to bloom throughout the passing of the day's hours. The tip of the 74-foot long minute hand moved 6 feet every minute. The 1904 World's Fair Society owns the clock's master works, which is presently on display at the History Museum in Forest Park.
Near the Palace of Agriculture an impressive collection of windmills (renamed- aerometers), occupied several acres upon Agricultural Hill. This showcased harnessing the power of the wind for agricultural uses: wind-powered irrigation, water pumping, corn shelling and grinding, to name a few, were shown.