Re: closing the visible space
In Durand's Recueil et parallèle des édifices de tout genre, anciens & modernes, remarquables par leur beauté, par leur grandeur ou par leur singularité, 1800, where a 'history' of architecture is presented via plans and elevations all drawn at the same scale and categorized by type (ie, temples, churches, palaces, theaters, etc.), the only building/structure larger than St. Peter's Basilica is the Great Pyramid of Giza--the Great Pyramid originally reached a height of 480 ft.; St. Peter's reaches 452 ft.; the U.S Capitol reaches 287.5 ft. From this 'record', it is likely safe to say that St. Peter's is the largest hollow stone/masonry building.
pragmatists turning political?
Oh, I thought it was more like having a hard time shifting out of bilocation gear.
Anyway, been meaning to interject a little exposition of the "politics of the plan".