Heading into the Wild : There's a huge expanse of untouched jungle around Kanchanaburi, which is the kickoff point for trekking, elephant riding, and river-rafting adventures.
Floating Markets: This area has more floating markets than anywhere else in Thailand. The most famous is at Damnoen Saduak—it's the only daily floating market left in the region.
Seeing Old Siam : History awaits outside Bangkok at a Neolithic site, the remains of a Khmer temple (Muang Singh Historical Park in Kanchanaburi), and in Nakhon Pathom, Thailand's oldest seat of Buddhist learning.
Bridge on the River Kwai : For a glimpse of more recent history, visit what remains of the "Death Railway" in Kanchanaburi and walk across the bridge made famous by the movie of the same name.
Converging Cultures : The area around Sangklaburi on the Thai-Myanmar (Burma) border is a mix of Thai, Burmese, and hill tribe communities like the Mon and Karen.