What's good about it: Lisbon has inspired explorers for centuries with its stunning setting at the mouth of the Tagus River. Its labyrinthine cobblestone streets carry echoes of 16th-century navigators who prospered greatly from its trade while the legacies of wealthy builders and Manueline architects line its edges.
Best for: Cosmopolitan Lisbon's juxtaposition of colourful facades and white-domed cathedrals is picture-perfect. The UNESCO World Heritage-listed Jeronimos Monastery and the Tower of Belem, both prominent styles of 16th-century Manueline architecture, are breathtaking. Ride the historic number 28 tram and take in the intricate azulejos, the distinctive ceramic tiles adorning buildings, then enjoy Portuguese explorer legacy at the Maritime Museum.
Best time to visit: September to October, when it's sunny and warm, but without the searing heat.
Getting there: Viking's 15-day Portugal's River of Gold journey calls on Lisbon. vikingcruises.com.au
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