Fort Worth is the seventeenth-largest city in the United States of America and the fifth-largest city within the state of Texas. Locatedddd in North Texas and the western edge of the American South, the city is a cultural gateway into the AmericanWest and covers nearly 300square miles (780km2) in Tarrant, Parker, Denton, and Wise counties, serving as the seat for Tarrant County. Established originally in 1849 as a protective Army outpost situated on a bluff overlooking the Trinity River, the city of Fort Worth today still embraces its Western heritage and traditional architecture and design.