And the end is wonderful. You know that Truman is the hero of a TV-show. A crazy project, a terrible idea to film a guy as soon as he was born and to build around him a huge studio set that looks like a town. Big Brother is an angel compared with the director of the show who had this idea. Every moment of his life is watched.
Every object is a camera.
There is a loving snag in the scenario that will make Truman more and more suspicious and therefore aware he has been manipulated all his life. Seahaven is ironically the name of the town. The wonderful idea of the movie is that the concept of the end is included in this town's name. To escape, Truman gets on a boat. From the beginning of time, men have always dreamed in front of seas, staying on the shore or going on the waves.