One of the most unique buildings on the grounds of the Harkness Estate has to be the most functional, the 1910 water tower. The structure was designed by architect James Gamble Rogers, a really under-appreciated architect who was commissioned by Edward and Mary Harkness to revamp their summer compound. The water tower features a skeletal frame with concrete block tower protecting it, surmounted by a shingled water tank which once had a functioning wind mill on it! Nearby the water tower, a garden designed by female landscape architect Beatrix Farrand frames the tower very well. In that garden sits a 110+ year old Japanese Thread Leaf Maple tree, which is probably the most beautiful tree I have ever seen.