INDIANAPOLIS (WISH) — The Brickworld Lego Exposition will feature 60 large displays when it returns to the the Blue Ribbon Pavilion at the Indiana State Fairgrounds.

Those displays will include cities, castles and train towns, and people who attend can participate in hands-on building activities, ranging from collaborative art projects to robotic navigation. Among the featured attractions will be The Great Ball Contraption, which is a large-scale system of small machines that move thousands of Lego soccer balls in a continuous loop; Stud Sand Beach; and Super Robo Rally, in which visitors can navigate large Lego robots through challenges. Other displays will incorporate themes including dinosaurs, zombies and th...