How many islets are in the Halong Bay and how many people live in Vietnam's biggest city?
Where do you find the largest cave of the world and how high is it actually?
Who used more stones for their buildings? The Egypt for their pyramids or the Khmer for Angkor Wat?
How many scattered jars can you find in Laos?
Let us know if you can think of any more fascinating facts from Vietnam, Cambodia and Laos!