The geography of Texas is diverse, featuring plains, hills, and mountains. The state is divided into several regions, including the Gulf Coast, which has sandy beaches, and the Hill Country, known for its rolling hills and rivers. The Panhandle in the north is characterized by flat terrain, while the Trans-Pecos region in the west includes the rugged Chisos Mountains. Texas is also home to major rivers like the Rio Grande, which forms part of the border with Mexico. The state experiences a variety of climates, from arid in the west to humid in the east, influencing its ecosystems and agriculture.