Sustainable New York Event: Oct 8 & 9

There is a "Sustainable New York" event happening this weekend (October 8 and 9), as part of the Open House Network program. You are invited to:
Learn about ancient and innovative methods of sustainable design in talks and tours around town. Visit the following sites that incorporate principles of "green" design.
Open House New York educates the public about New York City’s architectural, historic and urban development by providing access to innovative and inspiring spaces. :: Open House Network