The trail is part of the Sands Point Preserve Conservancy and it is on the original Guggenheim estate. You can walk onto the grounds for $4 or park for $10. It's a great family outing and there is a mix of paved and dirt trails and you can walk along the cliffs or down to the beach. There are also guided tours along the outer property. There is a lot to see and the grounds are gorgeous. Spring and fall are probably pretty spectacular here.
Vesna P. on Sands Point Preserve Loop Trail
My boys and I had awesome time