Sukhothai was the first Thai capital. It is now a UNESCO site. It is preserved from the 13 th and 14 th centuries. We hired a motorbike from our rustic hotel in New Sukhothai and headed out just before 6am to view the sites in the cool of the morning and take photos without other tourists in them. 
Later in the day, when the temperatures cooled from their high of 38 degrees, we drove around the tobacco growing farms nearby. You could smell the drying leaves before you saw them.