If you want a low and slow high visibility sightseeing airplane...
The second seat/cockpit is of course faired/covered over. The official product title/type is that of the Ryan ST-A "Special", which is powered by a 150 hp Menasco C4S engine. The "Special" was originally marketed by Ryan as a single-seat fighter (with the second cockpit faired/covered over), and could feature two 7.7 mm guns, one fitted to each wing.
Well, i'd still take my girlfriend along rather than the guns..
lol - #metoo - but that seating arrangement is not ideal..too much airplane in the middle