The course aims to introduce students to the study of European regulation of the financial sector, with particular attention to the supervisory architecture. The first part of the course is devoted to illustrating the functions of the financial system and the intermediaries through which these functions are performed; the fundamental principles and objectives that govern financial regulation. The second part explores the institutional architecture of supervision in Europe, with particular attention to the Banking Union and the tasks of the European Central Bank. The decisions of the European Court of Justice are key readings to understand the regulatory framework.