Bangkok Yai district is more precisely called the Wat Arun sub-district. It had been actually part of Chao Phraya river until a canal was dug in which altered the flow of the river. This resulted in the canal becoming the main river and the original river became Khlong Bangkok Yai. Since it is along the banks of Chao Phraya River, it is very accessible by boat. There are many choices of properties for sale or rent in this area.