This patchwork or tapestry (take your pick) of historical Lisbon spans sites (not limited to) a Roman theatre, São Jorge Castle (Moorish 10th century), Sé Cathedral (13th century), and 18th century Pombaline Lisbon. Logistically, the boundary of such a diverse span of history in Lisbon would include a large territory spanning several neighborhoods. Here listed: Alfama, Bairro Alto, Baixa, Bica, Castelo, Chiado, Mocambo, Mouraria, Pena, Santa Clara, São Vicente and Sé.

Prepare comfortable walking shoes as these areas cover the hills/stairs of Afalma, the waterfront, and central Lisbon. Besides walking, the metro train is convenient, the tram system includes 6 routes, and perhaps surprisingly "Tuk Tuk" 3-wheeled vehicles navigate the hard to reach medieval hillside streets. 

Lisbon is a city that is perhaps still discovering what makes it unique. It is special no doubt and worth exploring, but the two Lisbon nominations do reveal the complex web of cultures and architectural themes that are on display.