There is a myth about two hermits associated with Luang Prabang....

'The town is situated on a peninsula formed by the Mekong River and its tributaries in a clay basin surrounded by limestone hills that dominate the landscape. According to legend, the Buddha smiled when he rested here for a day during his travels, prophesying that it would one day be the site of a rich and powerful capital city. Another legend attributes the choice of the site to two hermits, attracted by its natural beauty, who gave it the name of Xieng Dong (or perhaps Xieng Thong).'
From UNESCO WHC website.