Thousands of soaring forested islands rise out of emerald waters at Ha Long Bay, located in northeast Vietnam. Ha Long (declared a World Heritage Site in 1994) means ‘where the dragon descends into the sea’, with the legend telling of a massive dragon descending from the mountains, gouging out crevasses and valleys and as it charged towards the coast. Once it settled down, legend has it that the area filled up with water leaving only the pinnacles visible. The best way to view these wondrous islands and explore their caves is via a boat cruise, with options ranging from budget to luxury (think an opulent Chinese-style junk boat).