Arbor Hill Historic District–Ten Broeck Triangle
Open space within the district include a few vacant lots and parking lots. Most are planned however, such as Van Rensselaer Park, the neighboring space around the church known as St. Joseph's park, and the large parcel at the district's northeast corner where the Ten Broeck Mansion and its gardens (and formerly carriage house) are located. Mature trees are abundant throughout. Topographically the district rises almost a hundred feet (30 m) from its eastern and southern edges to level terrain along North Swan between Second and Third. This reflects the ravines that existed there when Albany was first settled, later partially filled in to facilitate development, now the neighborhood of Sheridan Hollow, which separates Arbor Hill and the district from downtown Albany.
Morton Street
Morton Street's northwestern terminus is at the southern access road paralleling the Arborway a short distance east of the Forest Hills MBTA station in southern Jamaica Plain. It is narrow and one-way in the northwestern direction until the James B. Shea Memorial Circle, which is the southeastern terminus of the Arborway. Morton Street continues southeasterly from the circle as a four-lane divided parkway signed Massachusetts 203, flanked on the southwest by Forest Hills Cemetery and the northeast by Franklin Park. These are bounded by the American Legion Highway, with which Morton Street has a grade-separated interchange. It passes several smaller park areas until it reaches Harvard Street, after which it becomes much more urbanized.