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 100,000 acres were listed for sale in Texas's Burnet County recently; the overall value of all Burnet County farms and ranches for sale was nearly $302 million. Burnet County ranks 39th in the state for the combined amount of land currently advertised for sale. There were 17 properties listed as sold in Burnet County through the Lands of America Comparable Sales Program. This represented a total value of $20,692,114. Among cities in Burnet County with farms, ranches, hunting land and other 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 the 77th largest county (1,021 square miles) in Texas. It's located in the Highland Lakes Texas region of Texas.