Scottsdale is a popular winter resort and an arts and crafts center; some electronic equipment also is manufactured. In the city are the Taliesin West architectural school, established by American architect Frank Lloyd Wright; the Cosanti Foundation, containing the workshop of Italian-American architect and craftsman Paolo Soleri; and a community college. Scottsdale is noted for its efforts to preserve desert environments within the city. The innovative Indian Bend Wash Greenbelt, a flood control project, uses a system of parks, lakes, and golf courses as an alternative to a conventional concrete channel. A 2006 real estate survey has estimated the population of Scottsdale, Arizona at 231,127.