Sintra.
Do it - you'll love it. But it will rain - even in summer.
Petra. (Not the Blue Peter dog.)
Do it - you'll love it. But it won't rain - even in winter.
Two of the most amazing places on this beautiful earth that I have been lucky enough to see.
Wenchy, I also agree - the attention to detail and the user experience is something unique. I did it as a 36 year old with no kids in tow and I was genuinely 'blown away'. It was 'awesome' to coin the American, overused, expression.