Pran River Cruise All year round river cruise for exploring a reserved area for a number of local birds and fishes just 8 kilometres away from the resort. The best time of the year for water birds watching would be at the end of rainy season. Pranburi Mangrove Forest It is considered to be the largest Mangrove forest in Thailand with an ongoing project of preventing flood and sewage treatment under the Royal Patronage. The main attraction would be the romantic wooden bridge that will take you through the forest. Sam Roi Yot National Park The 98 sq km park covered with limestone mountain ranges mangrove swamps and beaches and is also home to various kinds of resident and migrating birds. Some of the major fascinating attractions are - Tham Kaew located in Chan valley and as the name implies the cave is full of beautiful and fascinating stalactites and stalagmites that are illuminated when touched by any source of light. Tham Phraya Nakhon is a large and beautiful cave where a couple of holes on the roof act as natural ventilation allowing the light to reach the cave floor. The most famous attraction of the cave would be Phra Thinang Khuha Kharuhat a gable roofed pavilion constructed during the reign of King Rama V and with its beauty the pavilion is now used as the symbol of Prachuap Khiri Khan Province .