Le Carceri d'Invenzione (Imaginary Prisons) is Piranesi at his least documentary and most purely inventive: sixteen etched plates of vast, impossible carceral architecture — stairways that lead nowhere, chains and pulleys suspended over bottomless drops, arches stacked on arches into total spatial confusion — with no real building behind any of it. This plate, the series' most reproduced and most discussed, centers a torture rack and a colossal severed head mounted on a pedestal amid a tangle of beams, ropes, and receding arcades that dissolve into darkness before any wall or floor resolves the space. What to notice: Piranesi reworked the entire series for a darker 1761 second edition, adding heavier shading and more sinister detail than his 1750 first state — this is that revised, more nightmarish version, the one that went on to influence two centuries of Gothic fiction, Escher's impossible architecture, and modern dystopian film design.

Maker: Giovanni Battista Piranesi
Date: 1761
Medium of the original: Plate
Original held by: Wikimedia Commons
Credit: Wikimedia Commons
Rights: Public domain, verified
Catalogue number: PA-00306

As chosen: 8 x 10 in, art print, classic frame
Picture	8 x 10 in
Outside size	9.6 x 11.6 in
Depth	0.9 in (22 mm)
Weight	[[REAL PROOF NEEDED: shipped weight per size and frame]]
Hanging	[[REAL PROOF NEEDED: hanging hardware Prodigi fits to this frame]]
Material	Enhanced matte art paper, 200 gsm; acrylic glazing
Made in	Charlotte, North Carolina, by Prodigi

Before a size goes on sale, the file is measured against it: pixels per inch at that size, how much of the picture a crop would lose, tone and sharpness. A size that fails is not offered, so there is nothing to choose wrong.

How the print check works

Sizes offered
Size	dpi	Grade	How it fits
8 x 10 in	190	Good	Trimmed 4.9%

Sizes withheld
Size	Why
8 x 12 in	Wrong shape: a 12% crop
11 x 14 in	138 dpi; a historical scan is never enlarged
12 x 16 in	125 dpi; a historical scan is never enlarged
12 x 18 in	Wrong shape: a 12% crop
16 x 20 in	95 dpi; a historical scan is never enlarged
16 x 24 in	Wrong shape: a 12% crop
18 x 24 in	83 dpi; a historical scan is never enlarged
20 x 30 in	Wrong shape: a 12% crop
24 x 30 in	63 dpi; a historical scan is never enlarged
24 x 36 in	Wrong shape: a 12% crop
30 x 40 in	50 dpi; a historical scan is never enlarged
36 x 48 in	41 dpi; a historical scan is never enlarged
40 x 60 in	Wrong shape: a 12% crop

Scanned

2026-10-07

Master file

1,522 x 2,000 px, srgb, Adobe RGB (1998)

Tone

Darks 56, lights 237 of 255; 0% clipped light, 0% clipped dark

Colour

0% vivid

Sharpness

58.83

Notes

Colour profile Adobe RGB (1998), converted to sRGB for the screen and the print
Neutrals lean warm (yellow): the paper and varnish of the original, kept as scanned

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