The most involved architectural hand rendering I've done to date is what's come to be called the SPQR illustration, completed during my time living in Rome. SPQR is the motto of the old Roman Empire, and of the modern city as well. It stands for the latin phrase "Senatus Populusque Romanus", which translate into "The Senate and the People of Rome". It's a palimpsest of different architectural drawing styles, including layered representations of various Roman architectural landmarks drawn in various views (site maps, floorplans, ceiling plans, sections, bird's eye views).
Since its completion I've gotten consistent requests for prints, and I've finally found access to a printer that reproduces the print to the standard I've been looking for. You can purchase the print under the illustration section of the shop on my website, or follow the link below directly to the purchase page. (update: no longer available).