 Many of the city's landmark structures and preserved neighborhoods were constructed during this period.For example, during this time, the Harvey and Clarke architectural firm – formed by Henry Stephen Harvey (the Mayor of West Palm Beach from 1924 to 1926) and L. Philips Clarke in 1921 – designed several structures listed on the National Register of Historic Places, including the Alfred J. Comeau House, American National Bank Building, Comeau Building, Dixie Court Hotel (demolished in 1990), Guaranty Building and Pine Ridge Hospital.Several waterfront hotels were built in the 1920s, including the Royal Palm, El Verano, and Pennsylvania.