Half timber construction, of fachwerk in German, is bundled under my tag “Tudor Revival,” which is really a style of architecture that dates to the transition from Gothic to Renaissance style in England.
It appears throughout St. Louis, often mixed with other revival styles at the turn of the Twentieth Century, as these examples show.
These next houses drive me crazy trying to give a name to their style. I feel like they show the influence of the Tudor style, but also more pure Italian Renaissance. That perhaps is the beauty of St. Louis architecture.