Home to some of Vietnam's best beaches and dive sites, the coastal city of Nha Trang is a magnet for those seeking sunshine and underwater adventure. Back dropped by mountains, white sandy coves shelter lovely bays and distant islands. The capital of Khanh Hoa province, Nha Trang lacks the culture found in neighboring areas but still has a few temples and such to remind you that you're in Vietnam.  Now is the time to visit Nha Trang; Bai Dai Beach is slated for development, and by 2018 it won't be so pristine. The beach is the main draw here, and most people either come to bask in the sun or dive at nearby islands. Major sites can be seen in a single day, but plan to tack on another day or two for island-hopping, scuba diving, or a visit to neighboring waterfalls and villages.