Texas is the second most populous and the second-largest state in the United States. Due to its size and geologic features such as the Balcones Fault, Texas contains diverse landscapes that resemble both the American South and Southwest. Although Texas is popularly associated with the Southwestern deserts, less than 10% of the land area is desert. Most of the population centers are located in areas of former prairies, grasslands, forests, and the coastline. Traveling from east to west, one can observe terrain that ranges from coastal swamps and piney woods, to rolling plains and rugged hills, and finally the desert and mountains of the Big Bend. There are many things to do in Texas, including visiting famous landmarks, enjoying nature or just experiencing the city life. Spa services are widely available in major cities and destination spa resorts.