The Slow Boat to Siem Reap

There are two ways to get to Siem Reap from Battambang (not counting a ridiculously expensive private taxi). You can take the bus, relatively quick, painless and safe, or you can take the six hour boat ride down the river to the Tonle Sap - an option the guidebook assures you is "not up to international saftey standards." So you know, the fun route!