text: Work on it was completed in the summer of 2013, when the fully renovated stadium was inaugurated with a friendly match between Union and Celtic F.C.. The newly renovated stadium was sold out for the first time on 31 August 2013, when 21,717 spectators saw Union beat FC St. Pauli 3–2.
  After redevelopment
  In 2023, the Försterei hosts Union Berlin's U19s in the UEFA Youth League as the first team hosts their UEFA Champions League games at Hertha Berlin's Olympiastadion due to UEFA requirements.
  Events
  Since the redevelopment, the stadium has also been used for a small number of non-football events, among them rock concerts and bike shows.
  Christmas Carols
  In 2003 the yearly Union Weihnachtssingen (Christmas Carols Singing) started as an unofficial gathering to which just 89 fans showed up. In 2015, 28,500 people attended, including players and supporters of other teams from around Germany and Europe. Fans drink Glühwein, wave candles around, light flares and sing a combination of Christmas carols and football chants.
  World Cup Living Room
  In 2014 the club came up with the idea of inviting fans to take their own sofas to the ground for the whole of the World Cup. The event was called WM Wohnzimmer (World Cup Living Room). More than 800 sofas were placed on the pitch in rows in front of the big screen.
  Concerts
  On 3 September 2015, Linkin Park played the first ever music show in the stadium, performing in front of 35,000 fans.