The European Union (EU) exemplifies the “top-down” approach to regional integration and has inspired similar projects worldwide. The EU’s top-down integration has been driven by “visionaries” and politicians, based on a string of treaties defining the evolving interplay of integration institutions (European Commission, Parliament, Council of the EU, European Council, etc.). Geopolitical concerns have been a key driver of the European integration model from its inception. The Franco-German alliance proved a solid foundation for peace and development. Yet, national sovereignty debates persist in the current age of deglobalization, as well as the complicated security issues surrounding Europe’s policies on the Ukraine and Middle East wars. European integration progressed through the five stages of Bella Balassa’s model, extending to new areas and countries. It has developed in waves, peaking in the 1960s and 1990s. Brexit accentuated the inflection point in the latest wave. The ups and downs of Turkey’s bid to join the Union illustrate the complex dynamics of integration. While the EU has successfully laid the foundation for peace within the Union, collective development, and growth, Europe still faces critical issues, including slowing growth rates, a democratic deficit, and unpredictable relationships with key partners such as the United States and Russia. Despite the mounting challenges, the EU’s top-down integration is a key element in today’s world society.