What is the absolute best way to see Sintra...using bus and feet or hiring a tour guide? we have 2-3 days
Deppends on the time of the year and where you will be staying.
Greece is cheap so we used private guide
I agree that the Top Ten tours would probable be the best way to get around and see the most especially the castle.
For a day trip from Lisbon a lot of people take the train, and then the local shuttle to get around the various sites. Using TopTen, though, I felt we were able to maximize the time spent at the sites instead of using precious time getting around ourselves. And, you get lots of verbal information.
It's really a matter of preference! You could consult a guidebook for a do-it-yourself visit.
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