Hua Hin (Thai หัวหิน) is a famous beach resort town in Thailand, in the northern part of the Malay Peninsula, some 200 km south of Bangkok. It has a population of 84,883 in an area of 911 km², and is one of eight districts (Amphoe) of the Prachuap Khiri Khan province.

Hua Hin is closely associated with the Thai royalty. Merely 25 kilometers apart, Hua Hin in Prachuap Khiri Khan province enjoys a wealth of satellite attractions; prominent among them are national parks and historical cities.

http://en.wikipedia.org/wiki/Huahin

Koh Samui island of Surat Thani Province (or Ko Samui, Thai: เกาะสมุย), or often, simply Samui as it is referred to by locals, is an island off the east coast of the Kra Isthmus in Thailand, close to the mainland Surat Thani town. It is Thailand’s third largest island, with an area of 228.7 km² and a population of over 50,000 (2008). It is rich with natural resources, white sandy beaches, coral reefs and coconut trees. In June, 2008, Koh Samui was granted official municipal status as an independent city; it had formerly been under the jurisdiction of Surratthani.

http://en.wikipedia.org/wiki/Koh_Samui