antechambers vestibules foyers lobbies entranceways entrance entryways entry halls porches porticos doorways hallways atria gateways portals passes concourses lanais ramadas stoops colonnades peristyles galilees tambours corridors passages passageways gangways doors gates approaches adits inlets thresholds drives access avenues openings driveways walkways aisles trails exits reception courts chambers cavities room archways port paths ways mouths arcades loggias wings galleries sills doorsteps alcoves niches recess nooks bays corners bowers hollows apses booths compartments cubicles indentation study