As the state owned much of the shoreline of Lower Saranac Lake, there is much less development there than on Upper Saranac Lake. One notable property is the Knollwood Club, built in 1899-1900 by local architect William L. Coulter for six friends, including Louis Marshall and Daniel Guggenheim. Louis Marshall's sons wilderness activist Bob Marshall and conservationist George Marshall spent the summers of their youth there,[3] and Albert Einstein was a frequent summer visitor;[4] he was at Knollwood on August 6, 1945 when he heard on the radio that the atom bomb had been dropped on Hiroshima.