The round house from which Thunderbird 3 launches on Tracy Island in the well known Supermarianation series "Thunderbirds". Best as I could do anyway, alas you can't have open ceilings between basement levels, but at least the rocket has a "3" on it. #basegame #BaseGameBuildsForSemaj #rocket #thunderbirds #tracyisland #secretbase Final version, made a few adjustments to match the show.