Aysén do General Carlos Ibáñez del Campo Capital Coyhaique Capital of the Aysén Region and the largest city on the Carretera Austral, Coyhaique lies in a valley at about 310 meters above sea level, between the Simpson and Coyhaique rivers. The center revolves around a pentagonal Plaza de Armas. Nearby are the Reserva Nacional Coyhaique, the Reserva Nacional Río Simpson with the Velo de la Novia waterfall, and, farther south, Parque Nacional Cerro Castillo.