Welcome to the San Juan cruise port guide. San Juan is the capital of Puerto Rico, an unincorporated territory of the United States. It is also one of the busiest and most popular cruise ports in the Caribbean. San Juan is the largest city on the island of Puerto Rico and is home to about 400.000 inhabitants. About 2/3rd of the island lives in the direct area of San Juan. The city has a unique charm to it and might just be the best city to visit in the Caribbean. The city San Juan dates back to 1521. That makes it the oldest European settlement, after Santo Domingo, in the Caribbean. San Juan’s colonial fort and town houses, ancient churches and old city walls is what makes it unique! There are interesting historical sights combined with great shopping opportunities and restaurants.