Thanks to pristine sands and clear aqua waters peppered with tropical islands, Nha Trang is Vietnam’s undisputed beach capital. Ringed by green mountains, this lively resort town is famous for scuba diving and its nightlife. Generally regarded as one of the most beautiful bays in the world, Nha Trang boasts 19 large and small islands. Must-sees include Hon Tre, the bay’s biggest island linked to the city by the world’s longest cable car to cross the sea, and Hon Mun, surrounded by about 1500 different types of coral in an area the World Wildlife Fund says has the most diverse marine life in Vietnam.