Jomtien Beach in the southern part of the bay area is divided from Pattaya beach by the promontry of Pratumnak Hill, just south of the city, and is mainly a residential area with luxury developments, beachside hotels, bungalow complexes, condominiums and restaurants. It offers of watersport activities such as jet skis, parasailing and small sail boat hire. A proposed 91-floor Ocean One Tower with an overall height of 367 meters, would be the tallest building in Thailand and one of the tallest residential buildings in the world.[3][4]. The Jomtien district is the location of one of the largest resorts in Asia, the 4000+ room Ambassador City Jomtien.