The Fenway is a mostly one-way, one-to three-lane parkway that runs along the southern and eastern edges of the Back Bay Fens in the Fenway–Kenmore neighborhood of Boston, in the east-central part of the U.S. state of Massachusetts.

After the turn-lane drops, the road becomes two-way with one lane in each direction past Simmons College and the Isabella Stewart Gardner Museum.

It then turns northeast at Louis Prang Street and becomes a one-way two-lane road which passes the Museum of Fine Arts and parts of Northeastern University.

A short spur connects the parkway to Westland Avenue and from there it continues as a two-way road with two lanes in each direction past Berklee College of Music and the Boston Conservatory, ending at Boylston Street.

Olmsted felt that all of the submitted plans were subpar and either did not take into account flood control or focused too much on it and neglected the public park aspect.

He directed the Fens to be dredged, graded, planted, and turned into a seemingly natural salt marsh to absorb and clean the flowing waters.

For the entire parkway system, each roadway name had to end in a consistent manner, "naturally aid[ing] in making the idea of continuity and unity familiar to the public, and, if such termination were short, simple and common, it would be in various ways a convenience".

The Boston City Engineer's report cited a hold up in acquiring property from there to the Brookline Avenue terminus, as the problem since the fill was the dredged material from the new path of the Muddy River.

[12] Work continued after the remainder of the land was acquired and the roadway was complete up to the intersection of Parker and Huntington Avenue (today Forsyth Way at the Museum of Fine Arts) by 1890.