The last two ports of call on my recent cruise were the capitals of Finland and Sweden respectively. I hadn't done any research in advance, so I didn't know what to expect of Helsinki. I thought it might be rather an anti-climax after St Petersburg. But in fact, I liked it very much. As always, a sunny day helped a good deal, and my only regret was not managing to fit in a boat tour round the city's waterfront – always a good way to see a place.