We had a wonderful time in Porto, which in some ways felt very familiar to us. The riverfront/port area is somewhat reminiscent of Gdansk, with its straight row of colourful building facades.  On the other hand, the steep hills, the streets that go off in unpredictable directions, and the locals' pride in their bridges are not unlike Pittsburgh's.

Ponte Dom Luis I:  A really cool bridge with a metro line and pedestrian crossing on the top span, and with a road and more pedestrian traffic way down low on the bottom span.

Porto was also great for going out in the evenings.  I already mentioned the tapas and fado we enjoyed on our first night in the city.  The following night it was port tasting, where we sampled 6 nice selections, 2 of which we decided to bring back home with us.

Adeus, Porto, until we see you again.