Two from opposite ends of the spectrum:
Joseph Cornell
He made shadow box constructions of found objects, old illustrations, birds, maps, blocks, etc. which feel like little mysteries, like clues to some aging other world waiting to be discovered. Check out the link; there's a lot of pix but they're too large to post in this thread.
Frederic Church
The best of the Hudson River School landscape painters of the mid-1800's. With amazing technique and almost scientific attention to detail, he was for a time the most famous painter in America, where his often gigantic canvases (
The Heart of the Andes, linked below, was over 5 feet tall and 9 feet wide) toured the country as single-painting exhibits. Here's his two most famous works and my personal favorite,
West Hills, New Haven, which perfectly captures one of my favorite sights--being up in the hills somewhere, with a view to the horizon, watching the shadows of giant clouds crawl across the landscape below. I'm astounded by the way he can capture light and shadow in a landscape, the bright clarity of a patch of light breaking through the trees.
The Heart of the Andes
Niagara
West Rock, New Haven
Here's something I just found while looking for pix to link: there's a whole damn lotta old paintings
here in the Visual Arts section.