The drive from Laredo to Del Rio follows the Rio Grande along US-83 through South Texas brush country.
Lake Falcon (Falcon International Reservoir) — fishing, birding, border views. San Ygnacio Historic District — 19th-century sandstone buildings, Treviño-Uribe Rancho (National Historic Landmark). Brush country: mesquite, huisache, prickly pear, white-tailed deer, javelina.
Amistad National Recreation Area (lake, rock art), Laughlin AFB (training base), Downtown (art deco, Val Verde County Courthouse), Border crossing to Ciudad Acuña (walking bridge).
Remote, beautiful, binational corridor. Fuel up in Laredo or Zapata—gaps between stations.