St. Barts, a French territory in the Caribbean's Leeward Islands, is the ultimate jet-set beach destination. Its 14 pristine beaches are jewels set in sparkling waters, the cuisine is infused with a French flair and the scene is cosmopolitan chic. Other islands in the region might be casual and laid-back, but here the dress code is stylish caftans, oversize sunglasses and sky-high heels. And the preferred mode of transportation is the yacht. Gustavia, the capital and main port of St. Barts (also spelled St. Barths), embodies the island's international appeal. A former fishing village, it was named for King Gustav III of Sweden—the Swedes occupied the island in the early 19th century, leaving a legacy of names and sites. The town's winding streets are lined with high-end boutiques, excellent restaurants and plenty of bars where you can toast your visit with a glass of refreshing rosé. A handful of historic sites, including forts and a lighthouse, add to the attractions.