Sihanoukville, also known as Kampong Saom, is a coastal city in Cambodia and the capital of Preah Sihanouk Province, at the tip of an elevated peninsula in the country's south-west on the Gulf of Thailand. The city has a string of beaches along its entire coastline and coastal marshlands bordering Ream National Park in the east. The city has one navigable river, the mangrove-lined Ou Trojak Jet, running from Otres Pagoda to the sea at Otres. Several thinly inhabited islands, under Sihanoukville's administration, are near the city.