la porte guillaume

The first Guillaume gate was built at the end of the 12th century; it is then one of the gates of the enclosure surrounding the city of Chartres. It bears the name of Guillaume de Ferrières, Viscount of Chartres.
Under the erroneous name of "Porte Saint-Guillaume", the building appears on the first list of 1840 established at the request of Prosper Mérimée. It was classified as a historical monument in 1911.The gate was destroyed by the retreating German army on the night of August 15 to 16, 1944. The protection was not called into question after its destruction.An excavation campaign intended to understand the architecture of the door is organized by the archaeological service of the town hall of Chartres in several successive campaigns from 2010 to 2014.source: wikipedia

The current remains are those of the 15th-century gate and its barbican or artillery boulevard.
The earliest remains on the site date back to the 1st century, with the remains of an ancient domus, a street, and its wooden gutter. The first Guillaume Gate was built around 1185; a wall can still be seen a little further along Rue de la Porte Guillaume. Source: journals.openedition.org/cem/14214?lang=en