Cloister Hotel at Sea Island, Georgia. It was demolished in 2003. Mizner also built a Mediterranean Revival mansion in Bryn Mawr, Pennsylvania, in 1929, La Ronda. It was demolished on October 1, 2009. Some architectural elements were salvaged. Mizner Mile In Boynton Beach, Florida, between Palm Beach and the future Boca Raton, Mizner's first vision of a "comprehensive ocean city" was a mile-long resort. "Mizner Mile, situated on [what is today (2018)] Old Ocean Boulevard, was to include a club, polo fields, houses designed by Mizner, and a two-thousand-room hotel modeled on 'the lines of a Spanish monastery'." He planned to exchange the design of a new Boynton City Hall for city commissioners' permission to build his hotel and club. The project (1924–1925) went aground, and Mizner abandoned it, after locals strongly opposed the relocation of Old Ocean Boulevard – a new road was built and the original road was to be destroyed – to allow beachfront lots. He designed plans for a never-built Boynton Woman's Club without fee "in an effort to make amends to the city". Boca Raton development In 1925 Addison Mizner embarked on his most ambitious project, what he called his "culminating achievement": the creation of a fabulous resort at Boca Raton. He claimed that it would offer more than Palm Beach, and was "undoubtedly the most tremendous land development project ever launched in the state of Florida." The city was incorporated in 1924 and immediately appointed him city planner. Boca Raton's original City Hall, which currently houses the city's Welcome Center and the Boca Raton History Museum, began as his project, though because of the bankruptcy of Mizner Industries he did not complete it, and it is more modest than he planned. He began by forming the Mizner Development Corporation, a syndicate of prominent investors including Rodman Wanamaker, Paris Singer, Irving Berlin, William Kissam Vanderbilt II, Elizabeth Arden, Jesse Livermore, Clarence H. Geist, and T. Coleman du Pont as chairman. In March the corporation quietly bought up of ocean-front property with an overall total of over . On April 15, 1925, the syndicate announced this large development, labeled the "Venice of the Atlantic", which would feature a thousand-room hotel, two golf courses, a polo field, parks, and miles of paved and landscaped streets which included a grand boulevard called El Camino Real. In an address before 100 salespeople, the architect declared: It is my plan