Three pen-and-ink architectural sketches are arranged overlapping on a flat, light-colored surface

Three pen-and-ink architectural sketches are arranged overlapping on a flat, light-colored surface. Each sketch is rendered on a separate sheet of brown kraft paper using black ink, employing line work and cross-hatching for detail and shading. The most prominent sketch, positioned in the lower-left foreground, depicts the Mother Cathedral of Holy Etchmiadzin, located in Vagharshapat, Armenia. This drawing features the cathedral's large central dome, topped with a cross, alongside an adjacent clock tower displaying a circular clock face. The structure includes multiple arched windows and balconies with detailed railings. Small bird silhouettes and faint, wispy lines indicative of clouds or smoke are drawn in the sky above the cathedral. Partially visible in the top-left background is a second sketch, showing a section of a multi-story building with balconies and a small turret. A third sketch occupies the right side of the frame, partially overlapping the central cathedral drawing. This sketch portrays a gothic-style cathedral characterized by a tall spire, numerous arched windows, and visible flying buttresses.