The Stony Brook Gatehouse in The Fenway is part of Boston's Emerald Necklace, designed in the late 1870s to 1880s by noted American landscape architect Frederick Law Olmstead. The Fenway portion of the Emerald Necklace (near the baseball stadium Fenway Park) surrounds the Muddy River, with three bridges wspanning the river. Olmstead asked architect Henry Hobson Richardson, with whom he had worked frequently, to design these bridges as well as this storage building. The building features a slate roof with distinctive wooden beams and walls of smooth stones of varying cuts. The red mortar used between the stone is similar to that of many of Richardson's other works. A similar companion building sits next close by.