Plans of the New-York Historical Society's are "...to alter
permanently its Landmark and the unique skyline of Central Park West
between West 76th and 77th Streets, at the crossroads of some of our
city's most beautiful and historic treasures."

"The Society wants to change the façade of its Landmark building and
then to erect a luxury tower that would loom over the building, the
American Museum of Natural History, Central Park and Central Park West
at one of its strategic intersections."

"On March 20, 2007 (next Tuesday), the NYC Landmarks Preservation
Commission will hold a public hearing on the New-York Historical
Society's plans to alter its "Triple Crown" Landmark on Central Park
West between 76th and 77th Streets."

Source: email from Landmarks West!