Introduction to Boylston Street: Boylston Street is another east-west street in Boston, parallel to Federal Avenue. This street is named after Mr. Boylston, one of the main sponsors of Harvard University. of. There are many high-end office buildings and luxury brand stores on both sides of the street, as well as many restaurants and coffee shops. Boston's largest Apple computer retail store and the vicissitudes of the Old South Church are both on this street.