Alfons 
sent me another goodie: a picture of the Concertgebouw (homepage), the famous concert hall in Amsterdam. And lookie, someone was so nice to add an item to everyone’s favourite wiki that is Wikipedia.
As the Wiki says the building has two halls, and I remember having seen both of them. The ‘Large Hall’ I saw when it housed Weill’s and Brecht’s ‘The Berlin Requiem’. The Small Hall, if I remember correctly, was the center of a concert of the Ebony Band. They didn’t play ‘Die Dreigroshen’ then, as was promised in the programme.
Impressive sound and accoustics. I hear, it wasn’t always that way.