This fort was the ARVN (Army of the Republic of Vietnam) military headquarters for Tay Ninh province. These photos are from 1966. This was the main entrance to the citadel.

La Fortresse de Tay-Ninh (below) is from an undated advertising card published by the Swiss chocolate maker Suchard.

La Fortresse de Tay-Ninh is from an undated advertising card published by the Swiss chocolate maker Suchard.

An undated postcard view of the Tay Ninh Citadel.

Another postcard of the fort and the barracks of the Colonial Infantry.