Since its creation in 1959, the European Court of Human Rights has had a direct impact on the national systems of its members. One of the main features of the European Court of Human Rights is that during its evolution and decision-making processes it has brought together legal systems in the light of human rights established in the European Convention on Human Rights. The present work discusses the role that the European Court of Human Rights has played in this matter by examining its development during its six decades of work, analyzing the methodology, techniques and theories that it uses to interpret the European Convention on Human Rights, and describing the implementation and enforcement of the European Court’s decisions if and when they implied a change of member state home legislation.