Dortmund reached the final for the first time since 1997, when it beat Juventus 3-1 at Munich's Olympic Stadium for its only European title.

NPR: Dortmund Reaches Champions League Final

One of the world's leading engineering firms, they have already been responsible the City of Manchester Stadium, the Allianz Arena in Munich as well as the main Olympic venues in both Sydney and Beijing.

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The Munich Games were temporarily suspended, and a memorial service attended by some 80, 000 people was held at the Olympic Stadium.

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