article_snippet.sent: After trekking through the beautiful Spelunca Gorge, I caught a cab to the seaside resort of Porto where a 16th Century Genoese tower stands guard over the harbour.
article_snippet.sent: A 16th Century Genoese tower stands guard over the harbour Porto .
highlights_snippet.sent: In the seaside resort of Porto a 16th Century Genoese tower stands guard .