The AAVSO's new headquarters was officially dedicated at a ceremony during the 100th Annual Meeting of the AAVSO, part of our 2011 centennial celebrations.
The event was broadcast live on U-Stream. A video archive is still available on their servers.
Sky & Telescope has a nice news article covering the dedication and events surrounding it.
Here is some background and more information on the building.
The American Association of Variable Star Observers (AAVSO) is looking
for an administrative assistant with immediate availability. The ideal
candidate will work well in a team environment, but demonstrate
initiative and perseverance. The AAVSO is a small non-profit in the
Fresh Pond area of Cambridge, serving a membership of amateur
astronomers across the world who wish to contribute scientific
observations of stars that vary in brightness. We are celebrating our