We have spent many months travelling around
If you do visit Kanchanaburi, we would recommend:
Kayaking down the Kwai (but do the long version 12 km) – you can rent a kayak, they will drive you out of town – up stream, and you paddle or float back downstream to the town. The scenery is fantastic, you can normally see some wildlife along the river edge, and you can stop at a couple of the resorts on the way downstream for a beer or soft drink
The waterfalls at
Elephant trekking. If you like elephants, this is a great trip out. A couple of companies combine this with a short river rafting trip and this too is a great adventure.
The war cemetery in the town should be visited and respects can be paid to some of the thousands of men and women from the allied forces that died here during the Second World War. And, of course, you cannot come here and not visit The Bridge Over The River Kwai.
Of course, if you do spend a day or two in Kanchanaburi, it does not mean that your stay on Koh Tao should be cut short to compensate. No way man. You will find out why once you get here. So instead you will just have to extend your trip a little. You were born to endure such hardships.