Phú Quốc is a Vietnamese island off the coast of Cambodia in the Gulf of Thailand. It's known for white-sand beaches and resorts, most of which are along the palm-lined southwest coast. More than half of the island is part of Phú Quốc National Park, which features mountains, dense tropical jungle, hiking trails and wildlife. Duong Dong is the largest town, with day and night markets selling crafts, produce and fish.
Stretching south of Duong Dong is Long Beach, a major resort area. Sao and Dam beaches, on the southeast coast, are less developed. Historical sites include Coconut Tree Prison, built by the French colonial administration and later used to house Viet Cong prisoners during the Vietnam War. Offshore are coral reefs and islets suited to scuba diving, snorkeling and sea kayaking. Phú Quốc is also famed as a producer of fish sauce, and the Nuoc Mam Hung Thanh factory offers tours.