A nice UNESCO cover from Spain, celebrating 3 stamps with Unesco sites: Salamanca, Alhambra in Granada and Cordoba Mosque. The site is inscribed at UNESCO's historical sites since 1984.
The Alhambra in Granada (middle stamp) is a fortress and former rural residence of the emirs who ruled this part of Spain in the 13th and 14th centuries.
The Historic Centre of Cordoba (right stamp) is also inscribed at UNESCO's historical sites since 1984. Cordoba's period of greatest glory began in the 8th century after the Moorish conquest, when some 300 mosques and innumerable palaces and public buildings were built to rival the splendours of Constantinople, Damascus and Baghdad. In the 13th century, under Ferdinand III, Cordoba's Great Mosque was turned into a cathedral.
The old town of Salamaca (stamp on the left) is inscribed at UNESCO since 1988 and it has important Romanesque, Gothic, Moorsih, Renaissance and Baroque Monuments. The Plaza Mayor, with its galleries and arcades, is particularly impressive.