FCI Seagoville is a low-security federal prison for men just southeast of Dallas, Texas, with an adjacent minimum-security satellite camp. Its history goes back further than most BOP facilities: it opened on October 10, 1940, originally built as a federal reformatory housing women. Everything changed after Pearl Harbor, when the site was repurposed during World War II as a detention center holding German, Japanese, and Italian immigrant families the government considered potential security risks — a lesser-known chapter of the wartime "enemy alien" internment program. Once the war ended, the facility was converted again, this time into the all-male federal correctional institution it remains today, a role it has held since 1945. Seagoville now houses roughly 1,800 men in the main institution, with about 170 more in the camp. For families, it's a facility with genuine historical layers — women's reformatory, wartime detention site, and now a low-security prison — sitting in the Dallas-Fort Worth metro area, which makes it more accessible for visits than many rural federal facilities.