Architectural section of a historic church with façade and apse, classical plate style; precise black ink linework with fine hatching and stipple on white paper. Longitudinal section cuts through the central nave, side aisles, transept, choir, and apse; crypt indicated below with stair connections. Show structural anatomy: thick masonry walls with alternating light/dark banding (polychromy suggestion), stone piers and paired columns, pointed and round‑arched arcades, ribbed vaults rising to a tapered, vaulted ceiling; clerestory, triforium, and aisle levels clearly layered. At the crossing, a prominent central tower sectioned and crowned by an onion dome (rendered as tonal pattern in monochrome), flanked by balanced side bays; layered pediments and decorative moldings expressed in profile. Lower register features smaller arches and paired columns; upper levels include arched windows, oculi, and detailed tracery. Apse section labeled with levels, height markers, and bay spacing; reveal precise joints and profiles at cornices, pilasters, and sculptural niches. Background linework lightly indicates contextual historic buildings with arched windows and ornament. Use a clear hierarchy of line weights for cut (heavy), profile (medium), and detail (light). Monochrome, high‑resolution vector aesthetic; no modern signage, no people, no clutter.