Photo of the week - Apr 27, 2012:BUDDHA, SUKHOTHAI HISTORICAL PARK Posted April 27th, 2012 by Cindy Fan & filed under Photo of the Week, Thailand. Wat Si Chum is in Sukhothai, the former capital of Sukhothai Kingdom (1238 - 1438). The ruins are now designated by UNESCO as a World Heritage Park. The Buddha image, known as Phra Achana, is over 11 meters wide.