Here is a fun website to peruse through:
Founded in July 2010 by writer A. N. Devers, Writers’ Houses is an online publication dedicated to the exploring writers’ spaces and art of literary pilgrimage. It includes houses all around the world, even Kenya! (Karen Blixen House and Museum).
One of these days I will make it a goal to visit all these houses. But for now, you can start with two in Maine: the Sarah Orne Jewett House in South Berwick and the Wadsworth-Longfellow House in Portland, home of the poet Henry Wadsworth Longfellow.