Wrigley Building. The Legli Building is the headquarters building of Legli Chewing Gum (Wrigley) Company. It's just across from the Chicago Forum Building north of Michigan Avenue Bridge. The whole building is white. The appearance of the building is Baroque style, consisting of two towers. The south tower is taller than the North tower. There is a ladder connecting the two buildings. The bell tower towers over the South tower. The Legley Tower is on the west side of Michigan Avenue and the Chicago Forum Tower on the east side of Michigan Avenue. These two magnificent and elegant buildings are like "gorgeous mile" gates. This is a must-see place for visitors to Chicago, but many visitors do not know the name of the building. There are supermarkets on the first floor of Legli Building and American fast food counters in supermarkets. The cruise ship pier is on the Chicago River near the Legley Tower.