Complex sentence: There was at the time no street along the beach and the sea broke through in many places, in order to protect themselfves from storm waves, almost every house behind the beach possessed a garden with a thick low wall.
Split into simpler sentences: There was at the time no street along the beach and the sea broke through in many places. In order to protect themselves from storm waves, almost every house behind the beach possessed a garden with a thick low wall.