We have one day in Lisbon on our forthcoming cruise. It's a city I really want to see, but need to keep ds (6) amused at the same time.
In Barcelona a few years back, we bought 1 day tickets for a tourist bus that went round the city (1 every 15 mins), we could hop on and off as we liked. Is there the same thing in Lisbon?
What should we make sure to see?