Plaster in a historic building is like a family album. The handwriting of the artisans, the taste of the original occupants, and the evolving styles of decoration are embodied in the fabric of the building. From modest farmhouses to great buildings, regardless of the ethnic origins of the occupants, plaster has traditionally been used to finish interior walls.
Old homes and modern air conditioning seem to contrast, but there are options. You can achieve summer comfort in the most humid climates, with tradeoffs between price, payback, and aesthetics.