The gazebo is intact and has a tiled pool in front of it. A path from it leads down towards the Hudson River, beyond the balustrade seen in the first picture.
Closer view of the gazebo. Here you can clearly see the tiled pool.
View from the gazebo looking back towards the west facade.
Taken with a Fuji X-E1 and Fuji XC 16-50mm f3.5-5.6 OSS II