Enter at West 81st and head slightly south toward the middle of the park for the North Ramble where you'll find Red Oaks, purple-hued Sweet Gums and russet Pin Oaks before heading to the Ramble's south side for even taller versions of these mighty American trees. For an even more breathtaking view of these wonders, however, walk those legs over to the Loeb Boathouse and enjoy the view from a paddleboat on the lake ($15 an hour).