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 [1]on their servers.
Sky & Telescope has a nice news article [2] covering the dedication and events surrounding it.
Here is some background and more information [3] on the building.
Links:
[1] http://www.ustream.tv/recorded/17711492
[2] http://www.skyandtelescope.com/news/home/131288524.html
[3] http://www.aavso.org/aavso-headquarters
[4] http://www.aavso.org/category/tags/centennial
[5] http://www.aavso.org/category/tags/front-page-news
[6] http://www.aavso.org/category/tags/hq
