The last weekend of 2012, we spent at Kamphaeng Phet, a place worth visiting although it is quite far from Bkk (some 350+ kms). For more details and pictures, please see the Traveller's group:

http://www.thailandfriends.com/group.php?discussionid=188&do=discuss for Kamphaeng Phet and general information

http://www.thailandfriends.com/group.php?discussionid=189&do=discuss for the Historical Park

http://www.thailandfriends.com/group.php?discussionid=191&do=discuss for the Waterfalls and

http://www.thailandfriends.com/group.php?discussionid=190&do=discuss for the Hot springs

Nice pics. Looks like it's worth the trip.

Nice pics. Looks like it's worth the trip.

Definitely! But you will need your own car to go to the places, especially the nature parks.