Claim: Borussia Dortmund is a German football club.

Fußballclub Gelsenkirchen-Schalke 04 e. V. , commonly known as FC Schalke 04 -LRB- -LSB- ʔɛf t͡seː ˈʃalkə nʊl fiːɐ̯ -RSB- -RRB- , Schalke or abbreviated as S04 -LRB- -LSB- ˈʔɛs nʊl fiːɐ̯ -RSB- -RRB- , is a professional German association-football club and multi-sports club originally from the Schalke district of Gelsenkirchen , North Rhine-Westphalia . The `` 04 '' in the club 's name derives from its formation in 1904 . Schalke has long been one of the most popular professional football teams and multi-sports club in Germany , even though major successes have been rare since the club 's heyday in the 1930s and early 1940s . Schalke play in the Bundesliga , the top tier of the German football league system . As of December 2015 , the club has 140,000 members , making it the second-largest sports club in Germany and the sixth-largest sports club in the world in terms of membership . Other activities offered by the club include athletics -LRB- track and field -RRB- , basketball , handball , table tennis , winter sports , and eSports .   Founded in 1904 , Schalke has won seven German championships , five DFB-Pokals , one DFL-Supercup and one UEFA Cup .   Since 2001 , Schalke 's stadium is the Veltins-Arena . Schalke holds a long-standing rivalry with Ruhr neighbours Borussia Dortmund , arguably one of the most widespread and well-known rivalries in German football , and matches between the two teams are referred to as the Revierderby .   Schalke was ranked as the seventh-best football team in Europe by UEFA 's 2015 UEFA club rankings .   In terms of operating income , Schalke possesses the seventh-highest operating income of any football club at `` $ 64.4 million or # 38.2 million -LRB- $ 48 million -RRB- '' , and 0 % debt as of August 2014 . Schalke also generates the 14th-highest revenue of any football club , at `` $ 265.6 million or # 157.8 million -LRB- $ 198 million -RRB- '' .   In May 2014 , Schalke 04 were ranked by Forbes magazine as the 14th-most valuable football club , at '' # 355 million or $ 599 million -LRB- $ 446 million -RRB- '' , an increase of 16 % from the previous year .