Swire Properties has announced the sale of the two uppermost penthouses at The Residences at Mandarin Oriental, Miami, a two-tower branded residential and hospitality development planned for Brickell Key in Miami. Each penthouse sold for $49.9 million, totaling $99.8 million across the two transactions. According to Swire Properties, the deals mark the highest-priced condominium sales recorded on mainland Miami and establish a benchmark of approximately $6,300 per square foot. The development is designed by Kohn Pedersen Fox, with Fortune Development Sales exclusively handling sales.