miner abandoned the city and subsequent owners, seeking to demolish it, made garish changes to the building to make it unappealing before finally leaving it open for vagrants to invade and pilfer. Remarkable preservation success occurred during the 1990s when the community exhibition hall, the Municipal Auditorium, designed by Thomas Reed Martin and Clarence A. Martin, was listed on the National Register of Historic Paces and meticulously restored to its depression recovery era, 1937 WPA community project, completion status and its architectural glory—both inside and out. The city boasts that 100,000 people use it every year and it is a boon to the community for recreation, lawn sports, as well as being heavily attended for auctions, concerts, conventions, flea markets, galas, graduations, lectures, orchid and flower shows, and a full range of trade shows of interest to the community. Later the Federal Building, designed by George Albee Freeman (the designer of Seagate for industrialist Powell Crosley Jr.) and Louis A. Simon, which initially had served as the post office was restored as well. Most of the luxurious historic residences from the 1920s boom period along the northern shore of Sarasota Bay also have survived. This string of homes, built on large parcels of elevated land along the widest point of the bay, is anchored by the John and Mable Ringling Museum of Art at its center. Among them is Cà d'Zan, the home of Mable and John Ringling, which was restored recently. Many significant structures from the comparatively recent "Sarasota School of Architecture" period of the mid-twentieth century, however, have not survived. Since they do not qualify under the age criteria set for historic preservation nominations their historical aspect often escapes public recognition. Others frequently are threatened by demolition plans for new development without consideration of their cultural and historical importance to the community instead of motivating the implementation of plans to retain the buildings and integrate them into new plans. In 2006, the Sarasota County School Board slated one of Paul Rudolph's largest Sarasota projects, Riverview High School, for demolition. The board arrived at the decision despite protests by many members of the community, including architects, historic preservationists, and urban planners. Others supported the demolition as they believed the structure is no longer functional. The issue was divisive. The World Monuments Fund included the school on its 2008 Watch List of 100 Most Endangered Sites in the category Main