Sage Gateshead

The building contains three performance spaces;
a 1,700-seater, a 450-seater and a smaller rehearsal
and performance hall.  Structurally it is three separate
buildings, insulated from each other to prevent noise
and vibration travelling between them.  These three
buildings are enclosed (but not touched) by the
glass and steel shell.

Get this image from alamy

Sage Gateshead
Sage Gateshead (Wikipedia)