As a state in Mexico, Chihuahua shares a border with the United States. Chihuahua, the capital, is notable for its Spanish Baroque cathedral and the Palacio de Gobierno, a government structure from the 18th century with large murals depicting important events in Mexican history. Copper Canyon is a set of gorges in the country's southwestern corner, and the popular Chepe (Ferrocarril Barrancas del Cobre) train connects the region to the nation's capital.