After he retired, Wittgenstein worked as an architect for his sister's house. He infamously took a year to design the door handles and radiators (That radiator is on the bottom right), refused to use carpets and curtains (he designed an iron curtain instead), and after the house was finished, he insisted on raising the ceiling of by 30 mm so he got the proportion he wanted. Nuts.
40+ years after the Tractatus was published, his estate's executor found an unidentified manuscript in Vienna, written before the Tractatus. He then published it as Prototractatus.
We thought it'll be fun to do a T-shirt of his work Post-tractatus as an architect, so here it is.