Cornelia and Richard Thornburgh have successfully sold their prestigious lakefront mansion on Everglades Island for an impressive $25.4 million. Initially priced at $24.9 million, the property saw multiple price adjustments before finding a buyer. Acquired by the couple in 2014 for $9 million, they invested significantly in renovations. Following this lucrative sale, they opted for a cozy historic bungalow on Australian Avenue, purchased for $8.12 million.