Capacity 62,000.

Matches played here
Group stages

• Poland vs Ecuador (Group A, June 9)
  
• USA vs Czech Republic (E, June 12)
  
• Argentina vs Serbia & Montenegro (C, June 16)
  
• Portugal vs Mexico (D, June 21)

Quarterfinal
1 match (July 1)

The Arena AufSchalke is one of the most modern soccer arenas in Germany, and the only one where it is theoretically possible to play indoor matches. (The first occasion was a Bundesliga match between local team Schalke and Freiburg (3-0) in February 2002).

Gelsenkirchen is the name of the city, but most Germans will rather have heard of the suburb after which the home team is named:
Schalke is one of the most popular teams in Germany, with several championships and cup wins to its name. The club is also notable because many of its early players were Polish immigrants or their descendants, like Ernst Kuzorra, team captain during the 30’s – the street passing the stadium is named after him.

North of the Arena you can see another soccer stadium, the Parkstadion (capacity 70,000) which was the club’s former home ground and also hosted a couple of matches during the 1974 world cup.

The pitch of the Arena can actually be moved outside the arena (as is the case on the picture here). This is done to let the grass grow better, and when the arena hosts other events, like pop concerts or Nordic skiing competitions (it is a regular feature on the Biathlon word cup schedule).

Schalke also owns the smaller Gl%uFFFDckauf-Kampfbahn, today used mainly for reserve team, youth and amateur matches. This stadium was originally designed for 34,000 spectators, but some matches were played in front of attendances of 70,000 plus.

More info: Official stadium website