I visited the historical park of Sukhotai in February 2012. The place is amazing. It was the capital of the Sukhotai kingdom during the 13th and 14th centuries. Being given up for centuries, the place has been well renovated by the Thai government. The park consists of almost 200 buildings, more or less in a good state of preservation. Several Buddhist statues are still in place and many temples worth a visit. A good way to go through the park from one place to another is to take a tuk-tuk at the entrance. Sukhotai is one of the best preserved examples of Southeast Asian ancient city and in spite it is far from Bangkok, the place is worth really the travel.