Artwork
The Round Temple on the Piazza Bocca della Verità, Rome

The Round Temple on the Piazza Bocca della Verità, Rome is a graphite drawing by the Baroque artist Joseph-Marie Vien. It dates from 1747 and is held in the collection of the National Gallery of Art.
About this work
Overview
Joseph-Marie Vien’s 1747 graphite drawing records the circular temple situated in Rome’s Piazza Bocca della Verità. Executed on laid paper, the work presents an open‑air structure with a domed roof, robust columns, and a solitary figure positioned before a low wall. A waterway runs along the lower edge, while modest buildings and trees populate the distant background.
Subject & Meaning
The drawing captures the ancient round temple that gave its name to the nearby “Mouth of Truth” legend, wherein individuals once placed a hand in the stone mask to test honesty. By including a lone observer, Vien hints at the temple’s role as a place of contemplation and public ritual within the urban fabric of Rome.
Technique & Style
Vien employs swift, light graphite strokes that convey the atmospheric quality of the scene. The sketchy rendering of architectural details—curved roof, thick columns, and surrounding structures—suggests a study rather than a finished composition, emphasizing tonal variation and the immediacy of observation over precise finish.
History & Provenance
Created during Vien’s Roman period, when he was immersed in the study of classical antiquity, the drawing reflects his early engagement with ancient architecture. Vien later returned to France, becoming Premier peintre du Roi (1789‑1791). The work remains a testament to his formative years in Italy, though its later ownership history is not extensively documented.
Context
The drawing belongs to a broader tradition of 18th‑century artists making on‑site sketches of Roman ruins, a practice encouraged by the French Academy’s emphasis on classical study. Such works served both as visual records for academic purposes and as preparatory material for larger, more polished compositions.
Artist & collection
Artist
Joseph-Marie Vien (18 June 1716 – 27 March 1809) was a French painter. He was the last holder of the post of Premier peintre du Roi, serving from 1789 to 1791, before it was abolished during the French Revolution.

















