Sihanoukville, Cambodia lies 143 miles southwest of Phnom Penh. This modern city is best-known as the location of the last official battle of the Vietnam War, between the U.S. forces and the Khmer Rouge. Known as the Mayaguez incident, the action took place between May 12–15, 1975, as U.S. forces struggled to free its ships from communist control.

Sihanoukville is now most popular for the many beaches to the west of town, including Victory Beach, Lamherkay Beach, Koh Pos Beach, Independence Beach, Sokha Beach, Serendipity Beach, Ochheuteal Beach and Otres Beach. Visitors can also catch a local water taxi to the nearby Sihanoukville islands, for snorkeling, and game fishing. Sihanoukville is also a popular diving destination, with two shipwrecks lying off the shores of Koh Tang, one of the Sihanoukville islands.