Sintra

With nearly 64,000 reviews averaging 4.9, Sintra's clearly delivering the goods for most visitors—and that variety of 633 bookable experiences means you'll find something that fits your interests and budget. It's worth the entry fee if you're into palaces, hiking, or just wandering misty hilltop forests, though going midweek and early morning will save you from the Instagram-crowd chaos. The numbers suggest it lives up to the hype without being a total letdown like some overhyped Portuguese spots.

Written by us from the live data above — never copied from anywhere. Ratings and counts update from Viator.