Halong Bay was formed by dragons who used their tails to gouge out valleys and crevasses and spat out jewels that turned into islands. Or so the Vietnamese believe. Whether true or not, this is an otherworldly landscape.
On a traditional wooden junk, you will drift through a fairyland of sheer limestone islands that rise from the emerald water, passing by unique rock formations and discovering caves in the rocks.
After you can explore even closer on a kayak or bamboo rowing boat.