Up until the late 1800's American architecture tended to follow European trends, although a decade or two later. You can find just about every European style from the 1700's or later in the US or Canada, and you will also find most American styles in Europe. The one that is noticably missing from America is Art Nouveau. I have yet to see it anywhere in American cities I have visited. Louis Sullivan adopted elements of the style in the decoration of a few of his buildings, and I know of a Milwaukee building, otherwise in the Beaux Arts style, with Art Nouveau designs in its window mouldings, but that is all. Why is this? Is there Art Nouveau in your community?