Le Duan Street was built in the 1870s and originally called Boulevard Norodom because it led to Norodom Palace (now Independence Palace). Along this nearly two-kilometer-long street are many of the city's oldest landmarks such as Notre Dame Cathedral, Onzième barracks (Ong Dem Barracks) and the Saigon Zoo and Botanical Gardens.
The "Onzième barracks" in Saigon refers to the Caserne de l'Infanterie, also known as the 11th Colonial Infantry Barracks. It was built by the French in the 1870s on the site of the former Phoenix Citadel. Following the Japanese coup in 1945, it was briefly used to imprison French soldiers. In 1956 it was renamed Cong Hoa (Republic) barracks and became the headquarters and barracks of the Presidential Guard under President Ngo Dinh Diem.
The barracks were heavily damaged during the 1963 coup and the only remaining parts are the two gatehouses at 2a Le Duan Boulevard.