The 1980 UEFA Cup was unique in that all 4 semifinalists were German. Eventually the Final was contested between Eintracht Frankfurt and Borussia Mönchengladbach. Frankfurt won on away goals after the tie ended 3–3 on aggregate

Having won the German championship in 1959, Frankfurt were one of the founding members of the Bundesliga in 1963.
Despite no Bundesliga titles they have won the German Cup 4 times and beat rivals Monchengladbach to win the UEFA Cup in 1980. 
Eintracht famously lost the European Cup final to Real Madrid on 18 May 1960 at Hampden Park 7–3 in front of 127,621 spectators. It is one of the most talked about European matches of all time, with Di Stéfano scoring 3 and Puskás scoring the other 4 for Real.