SINTRA, Portugal — With sunshine bathing its multicolored façades against a backdrop of deep blue sky, the Pena Palace in Sintra ... with an Australian banyan tree draped over its walls ...

While there are more than half a dozen sites to visit, the most stunning two, in my opinion, are the Pena National Palace and the Castle ... and exotic trees. You're likely to feel as if you ...

It reminded me of a mini Great Wall, with its stone walls that swoop and bend with ... the trees thinned out and I hit a curving road. When I looked up, I saw Pena Palace up close for the first ...