Subject: Horologion (Tower of the Winds), Roman Agora, Athens
Date: surveyed 1751–1754; published 1762
Authors: James “Athenian” Stuart & Nicholas Revett
Source: The Antiquities of Athens

The Tower of the Winds is represented through a meticulous survey that juxtaposes evidence and speculation as if they were a single entity.
The octagonal marble structure was originally equipped with sundials, a water clock, and a weather vane.
Stuart and Revett do not refrain from idealisation; construction, function, and ornament are instead delineated as congruent variables within a unified graphic system.