The Lavo Kingdom was a political entity (mandala) on the left bank of the Chao Phraya River in the Upper Chao Phraya valley from the end of Dvaravati civilization, in the 7th century, until 1388. The original center of Lavo civilization was Lavo, but the capital shifted southward to Ayodhaya, the port city on the right side of the Ayutthaya island around the 11th century, whereupon the state was incorporated into the Ayutthaya Kingdom in the 14th century.
Prang Sam Yot, showing considerable Khmer influences on the architecture in late 11th century
Image of Siamese mercenaries in Angkor Wat. Later the Siamese would form their own kingdom and become a major rival of Angkor.
The Chao Phraya is the major river in Thailand, with its low alluvial plain forming the centre of the country. It flows through Bangkok and then into the Gulf of Thailand.
The Chao Phraya in Bangkok
The original course of the river and its shortcut canals
Khlong Bangkok Noi in Nonthaburi province
Chao Phraya Express Boat on the Chao Phraya, Wat Arun is visible in the background