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Another activity that starts from Ranong. Although most companies that offer dive tours to the Surin Islands and Similan Islands are further south on the west coast of Thailand in Khao Lak and Phuket, you can also go diving at these areas from Ranong. Also famous dive sites like Richelieu Rock, Ko Tachai and Ko Bon are included in the liveaboard tours. In Ranong are a few liveaboard dive companies, of which The Smiling Seahorse and Aladdin Dive Safari are best known for their consistent tour schedule and various dive tours. You can also join dive tours to the remote and fantastic dive sites of the Mergui Archipelago in Burma. The dive season runs yearly from end Oct-May. You can also learn diving or enhance your diving skills while joining a PADI dive course at the dive centres in Ranong. Some courses are given during the liveaboard dive tours.
พระราชวังรัตนรังสรรค์ จำลอง; Rattana Rangsarn Palace
Phraya Damrong sutjarit Mahitsornpakdee (Kor Sim Kong) built this throne hall for the residence of King Rama V during the royal visit to Ranong Province on 23–25 April 1890. It is on the hilltop named "Niwest Kiree". The original throne hall was later dismantled and replaced by the city hall and then the new provincial hall was built in 2002. It was made of teak.
สุสานเจ้าเมืองระนอง
This Chinese grave of Phraya Rattanasetthi (Kho Su Chiang), Ranong's first governor, is on a piece of land dedicated by King Rama V. There are three tiers of stone platform with steps leading up to the grave with antique granite sculptures of Chinese noblemen, horses, goats, and lions on both sides.
วัดหาดส้มแป้น
This temple is on Khlong Hat Som Paen and provides a sanctuary for a shoal of soro brook carp.
วัดหน้าเมือง
It contains a Burmese style chedi (temple, over 70 years old and 10 metres in height, which was built by a Burmese, a main ordination hall, or phra ubosot where a beautifully bejewelled standing Buddha image is enshrined and a belfry decorated with a feline pattern.
ศูนย์วิจัยป่าชายเลนหงาว
A World Biosphere Reserve Zone by UNESCO owing to the essential role this mangrove plays in maintaining the region's ecological integrity. Many species of marine life come to the mangrove to mate, incubate their eggs, and care for their young. Temporarily closed as of 2026.
บ่อน้ำร้อนและสวนสาธารณะรักษะวาริน
The hot springs have been a popular tourist spot ever since King Rama V visited Ranong in 1890. There are three natural spring pools. The temperature of the water in the pools remains constant at about 65 C. There are several pools with very hot, sulphurous water, believed by many locals (and visitors) to have healing properties. The water is hot enough to boil eggs, which are sold by a vendor near the pools. There are also some pools with cooler water for bathing. These are managed by a local hotel and there is a small entrance fee (around 40 baht). The hot springs are by the river, which offers cool, shady spots under the trees to spend a few hours. Stalls and simple restaurants at river bank sell food and drinks. Nothing spectacular, but a pleasant enough way to spend some time if you are waiting for a night bus. There is also a paved area to rest on, heated by the water. Locals "chill" out here, nap or chat. Generally a lovely relaxed atmosphere. Updated 31/12/24. They expanded the area substantially with a much greater number of pools. To access the main pools you have to register and enter using an electric key. Rather confusing at first but the staff are very kind and helpful. There are other pools upstream which are open to everyone. Locker facilities are available at the registered pools. They also made a bicycle path from the hot springs along the river of the night market.