The construction of the Philharmonic
However, the above situation leads to the fact that louder noises are transmitted to the building on the floor of the Heinrich-Böll-Platz, such as pumps or cartons. For samples and concerts, therefore, the area above the Philharmonic must be monitored in such a way that no noise from the outside penetrates. Another problem is that the new subway of the city of Cologne should only be two meters below the concert hall. Here, too, noise has been a problem. As a result, the sound insulation below the room has to be greatly improved.