On the northeastern edge of town, this prison was built in 1971 by the Americans, and had 384 chambers. The cells had corrugated-iron roofs, and were infernally hot. The original structures remain in situ, but there's not that much left to see today. It was known as Camp 7 until 1973, when it closed following evidence of torture.
After the Paris Agreements in 1973, the name was changed to Phu Binh Camp.