Remains of a covered porch, or cryptoporticus, in a villa of Domitian five miles distant from Rome on the Via Frascati

Light enters from the upper left, flooding the two massive barrel-vaulted arches and illuminating the stone faces of the Roman structure. The dominant masses are the monumental arch openings themselves—they read as deep voids that anchor the composition, pulling your eye straight into the center-left arch first, then the right. Tiny human figures at ground level beneath and between the arches provide scale and atmospheric depth; the sky visible through the far archway creates a bright pull backward. The composition is a study in volumetric Roman architecture receding into shadow.

The darks are concentrated in the deep interior shadows of both arches and the heavily shadowed right-side masonry (#292929–#444444). Mid-tones dominate the sun-struck stone surfaces and architectural details (#585858–#8f8f8f). The brightest lights appear in the sky opening behind the left arch and on the upper cornice and frieze elements (#e6e6e6–#cccccc). The overall effect reads as high contrast—strong shadow plays against golden-gray lit stone—with almost no middle gray; squint and you see two distinct value families separated by the arch openings.

• #292929

  Ivory Black + Raw Umber, heavily weighted to black

  Deep interior shadows within both arches, recessed niches, shadow cast by the top cornice, shadowed bases of structures

• #444444

  Ivory Black + Burnt Sienna + a touch of Raw Umber

  Mid-shadow masonry on the right building face, interior arch shadows transitioning toward light, worn stone edges

• #585858

  Raw Umber + Burnt Sienna + Ivory Black in equal parts

  Sunlit stone faces of both archways, the major wall planes catching light, weathered masonry texture

• #8f8f8f

  Raw Umber + Titanium White + touch of Burnt Sienna

  Lighter-struck edges of stones, frieze and inscription band near the top, highlights on architectural moldings

• #cccccc

  Titanium White + Raw Umber + Ultramarine (cool gray), very white-heavy

  Sky visible through the left arch opening, brightest parts of upper cornice, bright stone catching direct overhead light

• #e6e6e6

  Near-pure Titanium White with minimal tinting

  The open sky beyond the left arch, the brightest highlights on the upper architectural trim and frieze

Piranesi uses hard, deliberate edges to define architectural boundaries—the arch voussoirs, cornice lines, and window openings are crisply rendered with ruled precision. Within the masonry itself, edges soften where shadow meets light and where weathering has broken the stone; the individual ashlar blocks dissolve slightly at their edges in mid-tone zones. Brushwork is economical—broad, directional strokes follow the planes of the walls, and fine detail (inscriptions, small figures) is suggested rather than rendered, creating visual hierarchy between the monumental forms and the incidental.

1. 01

   Establish the linear armature

   Using a ruler and HB pencil, lightly block in the two barrel-vaulted arch openings—note their slightly different scale and position relative to the vertical edge. Lay down the horizon line implied by the sky opening (upper left), the major vertical planes of the right-side building, and the receding orthogonals that suggest depth. Keep this grid extremely light; you're building a perspective scaffold for the stone surfaces, not drawing the arches themselves.

2. 02

   Define the major value masses and arch interiors

   Using a 2B pencil and broad, directional strokes, block in the deepest darks: the full interior of both arch vaults and the shadow side of the right building (these are your #292929–#444444 areas). Leave the sunlit stone faces of the arch openings, the frieze band, and upper cornice untouched. This creates immediate volumetric clarity—the arches read as receding voids rather than flat openings.

3. 03

   Establish the lit stone planes and mid-tones

   With a 2B pencil, lay in the mid-tone wash (#585858) across all illuminated masonry—both the left and right arch faces, the major wall planes, and the upper portions of the structure. Use directional strokes that follow the horizontal banding of the ashlar blocks. Notice the frieze inscription band sits slightly lighter; hold back here. Allow the dark interior shadows to frame this mid-tone layer.

4. 04

   Model the stone blocks and architectural details

   Using a 4B pencil (sharp), draw individual voussoir blocks within each arch, the horizontal bed lines of the masonry walls, and the molding profiles of the cornice. Keep lines crisp and measured along the arch curves; let lines soften and slightly blur in the shadowed zones. The inscription band above the left arch should show fine detail; the distant sky and right-side details can remain more summary. This is where the ruin reads as constructed rather than abstract.

5. 05

   Add the highlights and brighten the sky

   Using a tortillon or blending stump with a 2B pencil (or erasing with a kneaded eraser on a light wash), create the brightest value (#e6e6e6–#cccccc) in the sky opening visible through the left arch. Work highlights along the upper cornice and frieze, the top edges of prominent arch voussoirs, and anywhere direct light strikes a raised molding. These should appear as thin, deliberate accents rather than broad planes—they anchor the light direction.

6. 06

   Render human figures and atmospheric depth

   With a sharp 2B pencil, sketch in the tiny human figures scattered at ground level within and between the arches—they're purposefully small and shadowed, adding scale and loneliness. Don't detail their faces; suggest them with minimal marks. Push the atmospheric depth by softening edges slightly as you move back into the far opening, and by keeping the distant sky lighter but less detailed than the foreground masonry.

7. 07

   Deepen and refine shadow transitions

   Return to the dark zones (arch interiors, right-side shadow) with a 4B pencil. Darken the very deepest recesses where two planes meet, creating crisp shadow lines. At the boundaries where shadow meets lit stone, soften the edge slightly with a tortillon so the transition reads as light wrapping around volume rather than a flat line. The interior arch shadows should feel genuinely cavernous, not flat.

8. 08

   Texture and weathering

   With a sharp 2B or 4B pencil, add subtle surface texture to the sunlit stone faces—small irregular marks suggesting erosion, missing mortar, and age. Keep this restrained; a few marks per large ashlar block suffice. The frieze inscription should show a bit more detail and clarity. Where stone meets shadow, let the texture dissolve. A light fixative spray at the end will preserve the graphite and prevent smudging.

• Treating both arches as identical in size and depth—look carefully; they overlap and recede at different angles. The left arch is deeper; the right is closer. Misjudging this flattens the whole composition.
• Filling the arch interiors with uniform black instead of modeling them as volumetric voids. The interior of each arch should show variation in value and shadow edge softness, suggesting the curved surface and light creeping into the depth.
• Over-detailing the human figures and distant architectural elements (the right-side building, windows). These should remain sketchy and atmospheric; over-rendering them pulls focus away from the monumental arches and damages spatial recession.
• Losing the crisp architectural geometry by being too loose with edges. The ruled lines of the cornice, arch voussoirs, and masonry bedding planes need to read as measured Roman construction—not painterly or gestural—even as you soften shadowed transitions.
• Neglecting the sky opening as a light source. That bright gap behind the left arch is crucial to the spatial depth and lighting logic; if it reads as an afterthought or stays too gray, the whole scene feels underground and claustrophobic rather than a ruined, light-filled monument.

beginner friendliness

value contrast

palette complexity

compositional simplicity

brushwork visibility