Thailand's sprawling capital, Bangkok, is a city that lives on its canals as much as its streets, which is why it is called "the Venice of the East." Sian Richards explores the Chao Phraya River by long-tailed boat; visits the Grand Palace, one of Thailand's holiest sites; she views the martial art of Mui Thai boxing, Thailand's national sport; then visits the Joe Louis Theatre, where the art of Thai puppetry is being preserved.