This triangular park is about 66' at its widest point facing Greenwood Avenue, Bethel's main commercial street, with sides about 125'. It lies in the middle of the intersection of Wooster Street at its intersection with Greenwood Avenue. Its dominant feature is a large bronze statue of a World War I Doughboy on a concrete pedestal, located in a central point a few feet back from the sidewalk facing Greenwood Avenue. The Doughboy, erected in 1928 by the Community Association of Bethel in honor of the town's war veterans, is located within a paved circle with flower plantings from which paved paths radiate. The pavers are red, with the names of donors to the improvement project inscribed on many of them. Directly behind the doughboy statue, a wide paved walk edged with granite blocks leads to a secondary focal point, a large spruce before which is a small granite marker dedicated "To All Who Served," and placed there by the Bethel Chamber of Commerce in September 1991. The park is formally landscaped. The sidewalk on Greenwood Avenue is paved similarly to the paths. Cast-iron streetlights, fluted with bulbous light diffusers, line the park's edges, which have new concrete curbing. New Victorian-era benches of wood with cast-iron legs are placed along the walks and the Greenwood Avenue sidewalk near the Doughboy statue. Two mature oaks close to the Greenwood Avenue sidewalk flank the Doughboy statue, forming a triangulation that frames the statue. The northern edge of the park is planted with impatiens, softening the effect of a utility pole, which together with a few inevitable traffic signs, constitutes the only intrusion here.

P.T. Barnum Square is an important node in the commercial center of Bethel on Greenwood Avenue, and its surroundings are entirely commercial in use. Wooster Street is split into two one-way sections on either side of the park. The building surrounding it tend to be low, a mix of commercial architecture with older houses converted to business use. There are several one- and two-story 20th-century commercial buildings, a two-story early-19th-century house set back from the street, and at the northern edge of Wooster Street's intersection with Main Street a cluster of somewhat altered two- and three-story 19th-century commercial buildings, the tallest of which rises to a bracketed cornice. On the north side of one of the one-story commercial buildings, which faces School Street and the four-way intersection north of the park, is a painting of an elephant, a reference to P.T. Barnum.