Merkur Spiel-Arena, Multi-purpose sports arena in Stockum, Düsseldorf, Germany

The Merkur Spiel-Arena is a football stadium in Stockum, Düsseldorf, with a retractable roof and 54,600 seats for national matches; league games of Fortuna Düsseldorf are limited to about 52,000 because of security measures around the away block. Its exterior is clad in translucent greyish panels, with exposed white steel trusses and blue panels bearing the yellow sun logo on the roof and upper facade corners. The building sits on sloping green grass embankments, with concrete walkways and stairways leading up to it, and the Rhine lies to the west.

Built between 2002 and 2004, the stadium replaced the Rheinstadion, shifted slightly north on the same site by the Rhine. The city council approved it in late 2001 on the initiative of mayor Joachim Erwin; bids to host 2006 World Cup and 2012 Olympic matches failed. It opened as the LTU Arena, became the Esprit Arena in July 2009, and took its current name on 3 August 2018 under a sponsorship with the Gauselmann group.

The stadium's name has changed with its sponsors: it opened as the LTU Arena, was the Esprit Arena from 2009 to 2018, and has carried the Merkur name since 3 August 2018, when the Gauselmann gambling group took over the naming rights. Fortuna Düsseldorf plays its home matches here, and the ground also hosts concerts, shows and other sports. During the 2011 Eurovision Song Contest and UEFA Euro 2024 it was billed as the Düsseldorf Arena.

The stadium lies in Stockum, north Düsseldorf, with the Rhine to the west and the trade fair grounds directly south and east; the international airport is nearby. Line 78 of the VRR urban rail terminates at Merkur Spiel-Arena/Messe Nord station. The arena belongs to the Sportpark Nord, so footpaths and stairways climb the grass embankments to the entrances.

The retractable roof and a heating system of air heaters, gas radiators and underfloor heating keep the interior at least 15 °C in winter, so events run year-round. The arena also sits beside the Rhine in Stockum, next to the Messe grounds and the Sportpark Nord.