Bostonians familiar with the demolition of the West End may not know how another once-prominent location in the city disappeared from the map. This spot, located on Beacon Hill, was designed for the homes of wealthy Boston families, and was established at about the same time as another famous residential location further down “the Hill.” But, unlike Louisburg Square, which is today synonymous with old Brahmin Boston, Pemberton Square remains largely forgotten, its remnants barely visible.