>* "The problem is caused by the glass and metal sculpture at the top of the building. When the wind rushes past the edge of the glass panes turbulence is creat

>* "The problem is caused by the glass and metal sculpture at the top of the building. When the wind rushes past the edge of the glass panes turbulence is created." Remove the "sculpture". The building will remain an eyesore but, at least, the humming will stop. It must be maddening to live near that thing.