Great interactive installation

This work is installed in one of the T (subway) stations. It's between 2 tracks; the top right pic shows one of the track being occupied by a train. It is an interactive installation of bells that requires the public to make it work, using the handle on the wall (bottom pic). Moving the handle for side to side will cause the pendulums to swing, and eventually hit the bells. I think this installation if fantastic. Unfortunately not many people use it. Jeremy and I have tried it and it was fun when the bells ring.