See inside Eagle's Nest, the 42-acre New York Vanderbilt estate where a Gilded Age heir built his sprawling mansion
· businessinsider.com
Eagle's Nest was built for William K. Vanderbilt II between 1910 and 1936, and is now home to a museum, planetarium, hiking trails, and more.
Can you hear "The Last Great American Dynasty" playing in the distance?
There are many historical mansions on Long Island, but only one was once owned by the l...