Visited Fallingwater!
Fallingwater is the Mona Lisa of residential houses, if you haven't heard of it. I suppose not everyone's mom is a structural engineer. She actually complains about its structural flaws, so don't believe that it's the praise that's informed me. I find myself to be an ardent fan of beauty. Unfortunately, sometimes beautiful things come without air conditioning. I don't know that I'd want to live in a 30's house that despite everything is somehow showing its age. Nothing in particular, just the moldering scent of oldness.
The interior of the house is vastly underrated, the way you flow like liquid from room to room, from inside to outside and outside to in, bed to terrace, steps to water, cavern to light. Architecturally and philosophically, the artificial thing we call a "room" does not exist. After all, the outside of a house, beautiful as it were, graces postcards. The inside of the house though, is where you live.