I think it’s rather likely that the building isn’t consistently going to be at this height, and instead that the current section being built is it’s tallest (where the turntable’ll be), with the rest gradually levelling out to a more manageable height. This seems to be shown in the concept art, as well as the expected & somewhat intricately sculpted, ‘planted’, painted, etc. temple exterior, so I’d assume (or, yeah, hope) that at least this section in particular will have similar effort put into the exterior from all viewable angles. Especially considering that it backs directly onto Tiger Island, which already has a jungle/temple theme of its own, & having the train passing directly in between them both, not doing so would be a rather major missed opportunity.