There are two sources for additional tourism information in Nakorn Si Thammarat:
The Tourism Authority of Thailand has an information center housed in a charming 1920s officers' club on the edge of Sanam Na Muang. You can obtain a map of the main sights of Nakorn Si Thammarat as well as information on neighboring provinces.
At City Hall, you'll find another tourism information office, open every day from 9:00 a.m. to 5:00 p.m.