Les Halles is therefore an exception. Troyes' central market was completed in 1874. Its architect was inspired by the halles that Victor Baltard had just built in the capital. The architect designed an iron and cast-iron nave, with a brick infill for the lower section and shutters for the upper section, topped by a long-sloped roof with a central double skylight. A mezzanine floor was added in 1987 when the building was renovated.