It was originally built after plans by architect Simon Gourdet between 1631 and 1653, then rebuilt under the direction of Jacques-Germain Soufflot in 1748–1750.
[3] The first Loge du Change was a small classical building with four arches in front and two on each side.
Soufflot provided plans and elevations for its repair, performed by Jean-Baptiste Roche, an architect he had himself introduced.
The first-floor facade was completely rebuilt in Soufflot's uncompromising neoclassical style, unusual for the epoch.
In contrast, the dial on the left is more surprising because it marks days, months and years.