Where is this piano going? Actually, hanging in mid-air is its last stop.

It was lifted into place Monday as part of the Franklin Institute's Your Brain exhibition, opening in June in the museum's new wing. Hung by a ragged rope - seemingly - the piano, by its presence, asks visitors to make a decision: walk beneath the object, or not? It's meant to prompt people to think about how the brain weighs risk, and reacts.

The instrument, a 1930s Bond player piano by Packard, has seen the end of its playing days. It was hollowed out to make it lighter. Not that you'd ever want to find out how much lighter.