White Tower Hamburgers, founded in 1926 in Milwaukee, became a national fast food chain essentially looking to one-up White Castle. The fact that the exterior of this burger joint looks like the freshly mopped, white-tile floor of a hospital is no mistake: its intention was to purvey a sense of cleanliness. Overt similarities White Tower shared with White Castle eventually prompted the latter to sue in 1934, and ultimately forced White Tower to change its not-so-original signature appearance. This picture from 1951 shows one White Tower location, with its former look, at the southeast corner of N. Broad and Race Streets. —-Alex Graziano