This 377.36 km2 park is a UNESCO biosphere reserve. Wooded areas cover over 40% of the park, with species such as brown bears, dear, chamois and wolves roaming free. Rare flora and fauna can be admired on one of the 3 walking routes: Ruta del Alaba (4 hours) - Easy Starting at the hamlet of Soto de Agues 5 kms from Rio Seco, this walk runs parallel to the River Alba. Desfiladero de los Arrudos (5 ½ hours) This walk starts from Caleao, following the gorge. Bezanes to Brañagallones (+/- 5 ½ hours) This walk climbs up a track from the village of Bezanes to the meadows of Brañagallones in the site of an old glacial lake.

The Cathedral of Saint Andrew in Patras is a major Greek Orthodox pilgrimage site and the largest church in Greece. It consists of two connected buildings: a 19th-century basilica and a monumental 20th-century Byzantine-style cathedral, the latter featuring the largest dome in the Balkans. The interior of the older basilica is adorned with detailed frescoes and icons executed in the Ionic style. The complex is revered as the place of the apostle's martyrdom and houses holy relics, including a portion of his skull and fragments of his cross.

Patras Castle stands on the city's highest point, built over the ancient acropolis in the 6th century. Its strategic location grants you panoramic views over the city, the port, and the Gulf of Patras. The site is an open-air historical archive, its triangular walls and towers bearing the architectural imprints of Byzantine, Frankish, Venetian and Ottoman occupiers. Today, it functions as a free public park where you can walk the grounds, explore the ruins and find shaded benches.