Chicago's Water Tower is as tough as its natives. Through its 129-year life, the Gothic-style limestone building has withstood a fire that ravaged the rest of the city, bitterly cold winters and blisteringly hot summers with remarkable tenacity. This is due in part to the excellent craftsmanship of the original masons who, in 1869, pieced together the 200-foot building that originally housed a water distributor but now serves as a Visitors Information Center. The building's durability can also be attributed to William W. Boyington's design: By using very little steel, the architect minimized the problem of steel corrosion and expansion so damaging to many buildings of that era. Nevertheless, the passing of time, exposure to a harsh climate and increasing amounts of vehicle fumes prompted Chicago's officials to call for a cleanup of this well-known city emblem. They turned to Chicago-based BauerLatoza Studio to oversee the fast-track restoration. The $1 million project had to be completed by November 9, 1997, in time for the Festival of Lights. Work began the day after Labor Day with a fast-paced schedule for all the contractors. The masonry contractor had 15 to 16 masons working six days a week on the job. This article addresses the challenges of scaffolding the Water Tower, removing the deteriorated mortar and damaged caulking, replacing the damaged stones, using a stone restorer, cleaning the building face, and consolidating and waterproofing the structure.