This is not THE a must visit in Chanthaburi but Khuk Khi Kai is located in Laem Sing, a very pretty seaside spot. Hardly further, on the road that leads to the bridge over the arm of the sea, is the Red House another remnant of the French occupation. And on the other side of the bridge there is a nice little white temple. If you have the opportunity, stay at Laem Sing in one of the numerous homestays near the mangroves. They all offer packages with accommodation and quite interesting activities . The difficulty may be to find one with a person who speaks good English.