OLVERA, ON THE “WHITE VILLAGES” route, is of historical interest. The Hotel has 28 rooms, 27 doubles and 1 single, all with en suite bathroom, central heating and telephone. Services include Bar, Restaurant, Tea room, meeting rooms, laundry, spacious summer terrace and parking. Olvera. The center for the “ White Villages” route, set in attractive mountainous country , the town occupies a hill crowned by a 12th century Arab Castle. Officially designated of Historical Artistic Importance in 1983.     HISTORICAL BUILDINGS Olvera Castle, of Arab construction, 12th century Church of The Incarnation, built in 1505. FESTIVALS “Quasimodo Monday”, following Easter Week. Pilgrimage to the Hermitage, in May. St, Augustine Fair, in August.