I visited this National Trust for Historic Preservation site on May 28, 2009. The house and gardens were amazing. Kykuit is in the English Country House Style. It was designed by Delano and Aldrich originally between 1906-1908. The house under went a major renovation from 1908-1913 by William Welles Bosworth and Ogden Codman, Jr. This renovation gave the house the appearance it is known for today.
For more photos, you can visit my Flickr site.