Latvian National Museum of Art (Processoffice). Hands down, the stair that I am about to share with you is conceptually one of the most subtle tectonic statements that I have seen in recent years. Not simply because it is both simple and utterly sophisticated in its execution, but it takes its place so eloquently and effortless within the entrance foyer of an existing building, namely the Latvian National Museum of Art in Riga, Latvia (LNMM).