The Watertown Public Green is a large open area of about two acres along both sides of Route 6 (Deforest Street) just west of Main Street at the civic center. Visually, it is component of several pieces of property with separate ownership.

The Triangle south of Route 6 bordered also by Main Street and Town Hall Hill is planted with numerous shrubs and deciduous trees including maple, ash and oak. A gazebo is located on high ground near Route 6. The terrain drops off steeply east and south of the gazebo. Two memorial plaques are mounted on it, one dedicating the gazebo in commemoration of the 200th anniversary of the incorporation of Watertown, the other a memorial to Watertown citizen, Maurice Henry. A large boulder at the corner of Route 6 and Town Hall Hill has a large plaque commemorating the veterans of World War I, erected in 1921. A smaller plaque has been added on the south side of the boulder commemorating those who fought in Korea and Vietnam.

North of Route 6 the terrain rises. From Route 6 the Civil War monument, a very tall free-standing column topped with a globe on which stands an eagle with wings spread, is an imposing site. A shield with stars and stripes is carved on the front of the column. The monument, erected in 1908, is surrounded by shrubs and there are benches on either side of it. The area directly east of the Congregational Church is more sparsely planted than the triangle south of Route 6. It is mostly open green expanse with few trees along the borders near the streets. The area which is a part of the Munson Memorial Park is more heavily landscaped. A monument identifies the park as a memorial given by William J. Munson in memory of his wife, Marion A. Munson.