This chapter provides a comparative analysis of the organisational structure of the judiciaries, judicial power and various models of judicial administration practised in different legal systems. Focus is geared towards highlighting the relevance of organisational issues in judicature and the administration of courts to the fair trial principle and basic rights. A thorough examination is provided on the history, as well as the evolution and development of each different approach to judicial organisation, highlighting the role of judicial power and the courts. The role of politics is also addressed, especially in terms of the reform witnessed in the transition of post-communist states. Various approaches to reform in terms of judicial administration are discussed, including European examples, such as Belgium, Sweden, Italy, the Netherlands, as well as Italy, Spain, Poland, Romania, with a special emphasis on Hungary and its judicial reform in 2011.