PHU QUOC island

Phú Quốc is a large tropical island off the coast of Cambodia, though is part of, and only accessible from, Vietnam.
Phu Quoc is famous for producing the best nuoc mam or fermented fish sauce in the world. Phu Quoc is also famous for its pepper. It also has some of the best unspoilt beaches in South East Asia.
Visitors from any country arriving to Phu Quoc by cruise ship no longer need a visa for stays of up to 15 days. A passport with at least 45 days' validity is still necessary.
Visitors arriving in Phu Quoc by any other means (eg. plane) are still subject to normal visa regulations.

 PHU QUOC island - Introduction by vietnamoturism.org.vn