The Onatru Farm Town Park and the Onatru Preserve are owned by the Town of Lewisboro. They were donated by Alice Lane Poor. Onatru is a nonce-word created by her father, Edward Lane, from "On a True Farm." Recreation facilities at the park include fields for baseball, soccer and lacrosse, tennis courts and a play area. A marked walking trail leads through hardwood forests and a stand of Scotch pine. The open fields afford a good opportunity for bird watching.

The Preserve across the street from the park consists of marsh and a small pond reached by a short trail suitable for the smallest of hikers. A camping area is available with a permit from the Town Clerk. The remnants of an old foundation can be found in the woods near Shady Lane. Trail length is 1.5 miles.

Level: Moderate