If you are familiar with Wackenhut's castle, you definitely know S. Florida. As this was being built we couldn't imagine who would be living there. Never saw such a huge home. Took our boat behind this in 87.
Best. Hotel pool. Ever. The Biltmore in Coral Gables. One of the most beautiful hotels I've ever visited. If you're in the area on business during the off season, the rates are surprisingly reasonable.
A unique architectural site in the Millbrook area that shouldn't be missed is Wing's Castle. This Hudson River stone castle was built by Peter and Toni Wing using salvaged materials from antique buildings. The castle with 7 towers and moat took more than 23 years to build and they are still not finished.