• Dortmund welcome 40 millionth fan to SIGNAL IDUNA PARK.
  • Average attendance of 80,000+ highest in Europe.
  • Countless stories have been written on the 'Yellow Wall'.

The SIGNAL IDUNA PARK will be witness to a special moment on Friday night. When Borussia Dortmund entertain Hertha Berlin, the club will also welcome fan number 40,000,000.

No, you did not read that wrong: BVB's 40 millionth fan will walk through the turnstiles of the SIGNAL IDUNA PARK, which was known as the Westfalenstadion until 2005. The stadium has become a Bundesliga brand in its own right, just like the fans who bring it to life week in, week out.

The Südtribüne, or South Stand, is globally renowned. It is the largest single standing area of any stadium in Europe, and with a capacity nearly 25,000, single-handedly houses more spectators than the stadiums of Bundesliga rivals FC Ingolstadt 04, SV Darmstadt 98 and SC Freiburg. One glimpse of a photograph of the "Yellow Wall" in 2010 was all Saudi fan Loai Mansour needed to set his heart on one day cheering on Dortmund from inside the fabled venue.

Watch: What makes the SIGNAL IDUNA PARK so special:

In 2012, the then-16-year-old flew to Germany for the first time and his first port of call was the SIGNAL IDUNA PARK. "I arrived at nine o'clock in the evening, standing in front of the stadium, and it felt as if the sun was rising," Mansour recalls. For the next three weeks the youngster watched every Dortmund game he could live. The experience left an indelible mark, and in 2014 Mansour returned to Dortmund to study, and has become a regular guest at Dortmund matches ever since.

Members of the fan club "Amper Eichen" enjoyed their first home game more recently. Not content with simply attending matches, the group decided that the best way to show their support for the eight-time German champions was to plant a tree. Nineteen of them, in fact.

After the Bundesliga triumph in 2010/11, die-hard BVB fans had a crazy idea: they wanted to build a "Borussen-Allee", or Borussian Street, in honour of their club. This was realised by planting two rows of nine oaks, each separated by 9.09 metres. Tree number 19 stands at the top of the street and represents the year of the club's founding, 1909.

Fan club "Amper Eichern" came up with a novel way to celebrate Dortmund's Bundesliga title triumph in 2011.

Such gestures have become tradition at BVB. Also in 2011, fan Paul Wichers was so enthusiastic about Dortmund's title win that he painted the pavement at the city's Borsigplatz - the birthplace of the club - yellow and black. The euphoria in Dortmund was such that the local authorities turned a blind eye. It would be safe to expect the same again, should Borussia seal another Bundesliga triumph in 2017.

Keep up with Borussia Dortmund's clash with Hertha Berlin by heading to our match centre!