Erasmus Student Network (ESN) is one of the biggest interdisciplinary student associations in Europe, founded in 1990 for supporting and developing student exchange. The network is present in 297 Higher Education Institutions from 32 countries. It is constantly developing and expanding. ESN works for the creation of a more mobile and flexible education environment by supporting and developing the student exchange from different levels, and providing an intercultural experience also to those students who cannot access a period abroad ("internationalisation at home")