The European Union has existed for over half a century. Having started as the 'Europe of the Six' in a specific industrial sector, the Union today has twenty-seven Member States and acts within almost all areas of social life. The Union's constitutional structures have evolved in parallel with this immense growth. Born as an international organization, the Union has developed into a constitutional Union of States. This new textbook analyses the constitutional law of the European Union after Lisbon in a clear and structured way. Examining the EU through a classic constitutional perspective, it explores all the central themes of the course: from the history and structure of the Union, the powers and procedures of its branches of government, to the rights and remedies of European citizens. A clear three-part structure and numerous illustrations will facilitate understanding.