For years , tourists have gone to quaint cities along the Mekong , like Luang Prabang in Laos .
Laos /location/location/contains Luang Prabang
Laos /location/location/contains Mekong
IN NNS , NNS VBP VBN TO JJ NNS IN DT NNP , IN NNP NNP IN NNP .