If possible, you should visit Venice at least once: there is no city in the world quite like it. Venice is built on small islands, near the north-east coast of Italy; and instead of streets it has canals, some narrow, others wide. When you go there by rail, the train crosses a long bridge over the sea, and stops at Venice station, which is on the edge of the city.
As you emerge from the station, instead of taxis, you see dozens of small boats, to take you and your luggage to your hotel. These boats are called "gondolas", and there is a man in charge of each of them: he makes the boat move by an oar at the rear end.
Naturally, there are no buses in Venice, as there are no streets for vehicles. Instead, there are large motor boats on the wider canals, each carrying about fifty passengers. It is cheaper to travel in them than in gondolas. You can , however, walk along narrow lanes, crossing the canals by bridges.