Texas is the second largest state by both area and population. It has a diverse climate and economy, being a major producer of oil, gas, and agriculture. Some of its iconic attractions include the Alamo in San Antonio, the River Walk, and its state capital building in Austin. The state has a long history dating back to Spanish exploration and its independence from Mexico, and today has a mix of urban centers like Houston, Dallas, Austin and San Antonio alongside wide-open rural landscapes.