You can't miss Trieste's main majestic square on the seaside. This is the 0 meridian of the town replete with fine architecture and a good view of the ocean liner that happens to have moored here. Also a great place for people watching and, of course, for a caffè.

We visited the Piazza dell'Unita d'Italia in Trieste whilst on a one day stop in the city on a Monday in June. Arriving on a cruise ship, we had opted to take a guided walk of the city and this area was on the route. The Piazza is an impressive large are abounded on three sides by imposing buildings with some magnificent architecture. The fourth side is open to the sea though separated from it by the main road. Our guide explained that just as in Venice this area had been built on marsh land on timber piles and was the focal point of the administrative are of the city. There is an impressive looking fountain at the top end of the Piazza, regrettably not working on the day of our visit. There are coffee shops spread out around the perimeter of the square and it looked quite a pleasant place to take refreshment in the shade and watch the world go by. A must see destination if you are visiting the city, and also very photogenic.