Kanchanaburi is a great place:

They have at least 3 thinks you must see

1. The Bridge on the River Kwai

2. The Erawan waterfall (Is truly one of the most beautiful falls in Southeast Asia. It is surrounded by dense jungle and offers all to nature lovers).

3. The Tiger Temple (Animal rescue center looked after by buddhist monks)


So, if Kanchanaburi is your next travel destination i really recommend it !!