The central region of Texas covers the state's three largest cities: Houston, Dallas-Fort Worth and San Antonio. The limestone terrain of Texas Hill Country lies in Central Texas, as do the state's three largest rivers, the Trinity, the Brazos and the Colorado. A total of around 100,000 acres were listed for sale in Texas's Burnet County recently; the combined value of all Burnet County farms, ranches, and rural real estate for sale was $1 billion. Burnet County ranks 14th out of 254 counties in the Lone Star State for the total number of acres of land currently advertised for sale. There were four properties listed as sold in Burnet County through the Land Network Comparable Sales Program. This represented a total value of $7,490,000. Among cities in Burnet County with land for sale, Burnet had the most land for sale. Based on its natural assets, tourism and recreation contribute significant revenue toward Burnet County's overall GDP. Burnet County is Texas's 77th biggest county (1,021 square miles). It's located in the Highland Lakes Texas region of the state.