Built in the weeks following the Union defeat at Bull Run, Fort Worth was situated on a hill north of Hunting Creek, and Cameron Run, (which feeds into it). From its position on one of the highest points west of Alexandria, the fort overlooked the Orange and Alexandria Railroad, the Little River Turnpike, and the southern approaches to the city of Alexandria, the largest settlement in Union-occupied Northern Virginia. In modern times, the site of Fort Worth sits within the boundaries the City of Alexandria (the land west of Quaker Lane, was annexed from Fairfax County in the 1950s) just off Seminary Road. Fort Worth Ave, a residential street approximates Fort Worth's Civil War location.