ログインして続行
To enrich your journey to Porto and the Douro Valley, I recommend exploring some great guides and books. "Lonely Planet Portugal" is an excellent travel guide for first-time visitors and seasoned explorers alike. For a deeper dive into Porto's culture and history, try "Porto: Gateway to the World" by Richard Zimler. If you enjoy wine, "The Wines and Vineyards of Portugal" by Richard Mayson will make your Douro Valley tour even more enjoyable. For local insights, the "Rick Steves Portugal" guide is also a fantastic resource. These books will help you make the most out of your adventure, and you'll arrive well-prepared to discover Porto’s charm!