Raising A Steel Beam With Balloons.

Ever heard of "topping out?" It's the celebration large builders hold when installing the final piece of a structure, typically related to the roof. The entire construction crew signs the steel beam. This practice goes back centuries, and today I walked by one in progress. A pretty cool tradition. This building's upper floors will house the new San Francisco Conservatory of Music -- and sit directly across the street from SF Symphony Hall. Talk about visualizing your dreams!