Andrássy Avenue is a 2,310-metre boulevard lined with buildings in uniform architecture and linking the City Centre with the City Park. Andrássy Avenue, including the Millennium Underground Railway, running beneath the surface, as well as Heroes? Square, located at is end, was recognised as a World Heritage Site in 2002. It accommodates the crème de la crème of Eclectic-style buildings in Budapest, among them a wealth of residential houses with wonderful and intimate inner courts, statues and foundations as well as the Opera House, built on the plans of Miklós Ybl.
