San Juan, Puerto Rico
Historic San Juan offers a wealth of sights and activities. The old city was founded in the early part of the 16th century and features stunning ocean views from the battlements of two well preserved fortress operated by the US National Parks Service. Lots of interesting architecture with an 'old world' feel, museums, galleries, and shops. Take a tour of the Bacardi factory just across the bay from the old city. Beaches and rain forest are nearby.
Research & Planning Links: Royal Caribbean Excursions, Royal Caribbean Notes, An aerial picture and links, Puerto Rico maps (click on Old San Juan link), Puerto Rico Tourism Company (tourist board), National Parks Service San Juan National Historic Site (Fort San Cristóbal and El Morro), San Juan Cathedral (its in Spanish, but some great picture pages see the "Tour Gráfico" links), interactive map of San Juan.