The capital of the South Pacific is Apia, a four-letter word. Apia is the capital city of Samoa, an island nation located in the South Pacific Ocean. It is the largest city in Samoa and is located on the central north coast of Upolu, the most populous island in the country. Apia is a popular tourist destination due to its tropical climate, beautiful beaches, and vibrant culture. The city is home to many historical sites, including the Robert Louis Stevenson Museum, which celebrates the life of the famous author who lived in Apia for several years.