Country/territory: Portugal
Central coordinates (latitude / longitude): 37°45'00"N (37.7500°) / 008°00'00"W (-8.0000°)
Area (reported): 83,579 hectares / 835.79 km² / 206,528 acres / 322.70 square miles
Area (GIS-derived): 83,714 hectares / 837.14 km² / 206,862 acres / 323.22 square miles
Altitude: 160–289 m (525–948 ft)