Looking aft along the promenade deck of the Imperial Airways Empire class flying boat from the late Note how the windows on the starboard side are lower (and in 'portrait' orientation) than the 'landscape' oriented windows on the port side.
Another view of the smoking room (at the forward end) of the Short Empire (or: 'C-') Class flying boat of Imperial Airways. The cockpit was on the flight deck immediately above this main-deck compartment.
The walkway through the wing of the Boeing Clipper flying boat. A bit cramped, but this access way allowed the flight engineer to service and even repair a malfunctioning engine in flight, if needs be.