Bangkok is a city of endless fascination. Spiked with countless high-rise buildings of concrete and glass, Bangkok is an exhilarating mix of chaos and refinement, of frenetic markets and hushed golden temples, early-morning alms-giving rituals and ultra hip designer boutiques. In the heart of the city is the Chao Phraya River, its vast network of canals (klongs) as important to local transportat…