Although we didn’t know very much about Sintra, before our 3-day visit, we did know that Pena Palace was the attraction that visitors flock to by the millions.  And, that the views from the hilltops were reportedly breathtaking.  It was with those notions in mind, and the forecast of a clear day, we chose to visit Pena Palace on our last day in Sintra.  Here’s how we did it.