See the Curbed article on Virginia Savage McAlester, the author of A Field Guide to American Houses. A revised version of the encyclopedic classic came out a few years ago, and McAlester is now planning a field guide to commercial buildings.
The place where Samuel Clemens, a.k.a. Mark Twain, did much of his writing is an octagonal stand-alone study that his sister-in-law built for him in Elmira, New York. Many of his most famous works, including The Adventures of Huckleberry Finn, were written here. The study was later moved to the campus of Elmira College, where it can be seen today.