BFC Germania 1888
BFC Germania 1888 was founded by 17-year-old Paul Jestram, his three brothers, and a number of their schoolmates from Askanischen Gymnasium at a time when football was not yet common in Germany, the first football games having been played in Berlin and Hamburg in the winter of 1881–82 by expatriate Englishmen. No football pitches had yet been built so "BFC" played on the Tempelhofer field where an airport would later be constructed.
Hamburger SV
Soon after, Germany's first professional football league, the Bundesliga, was formed, with HSV one of 16 clubs invited to join that first season. Hamburger SV held the distinction of being the only original Bundesliga side to have played continuously in the top flight – without ever having been relegated – from when the league was formed in 1963, until they were relegated in the 2017–18 season, finishing in 17th place. They had shared that special status with Eintracht Frankfurt and 1. FC Kaiserslautern until 1996, and with 1. FC Köln until 1998. Altogether, 49 other sides have come and gone since the league's inception. The Bundesliga celebrated its 40th anniversary on 24 August 2004 with a match between "The Dinosaur", as the club has been affectionately nicknamed due to its old age, and Bayern Munich, the league's most successful side.