The Burgos Cathedral construction began in 1221 and was completed in 1567. It is a comprehensive example of the evolution of Gothic style, with the entire history of Gothic art exhibited in its superb architecture and unique collection of art, including paintings, choir stalls, reredos, tombs, and stained-glass windows.
The plan of the Cathedral is based on a Latin Cross of harmonious proportions of 84 by 59 metres. The three-story elevation, the vaulting, and the tracery of the windows are closely related to contemporary models of the north of France. The portals of the transept may also be compared to the great sculpted ensembles of the French royal domain, while the enamelled, brass tomb of Bishop Mauricio resembles the so-called Limoges goldsmith work. Undertaken after the Cathedral, the two-storied cloister, which was completed towards 1280, still fits within the framework of the French high Gothic.
After a hiatus of nearly 200 years, work resumed on the Burgos Cathedral towards the middle of the 15th century and continued for more than 100 years. The work done during this time consisted of embellishments of great splendour, assuring the Cathedral’s continued world-renown status. Two architects, Juan de Vallejo and Juan de Castañeda, completed the prodigious cupola with its starred vaulting in 1567, the Burgos Cathedral unified one of the greatest known concentrations of late Gothic masterpieces: the Puerta de la Pellejería (1516) of Francisco de Colonia, the ornamental grill and choir stalls, the grill of the chapel of the Presentation (1519), the retable of Gil de Siloe in the Constable's chapel, the retable of Gil de Siloe and Diego de la Cruz in Saint Anne's chapel, the staircase of Diego de Siloe in the north transept arm (1519), the tombs of Bishop Alonso de Cartagena, Bishop Alonso Luis Osorio de Acuña, the Abbot Juan Ortega de Velasco, the Constable Pedro Hernández de Velasco and, his wife Doña Mencía de Mendoza, etc.
Thereafter, the cathedral continued to be a monument favoured by the arts: the Renaissance retable of the Capilla Mayor by Rodrigo and Martin de la Haya, Domingo de Berriz, and Juan de Anchieta (1562-1580), the tomb of Enrique de Peralta y Cardenas in the chapel of Saint Mary, the chapel of Santa Tecla, and the 'trascoro' of the 18th century.
The cathedral was declared a World Heritage Site by UNESCO on October 31, 1984. It is the only Spanish cathedral that has this distinction independently.
The Church of Saint Demetrius, or Hagios Demetrios, is the main sanctuary dedicated to Saint Demetrius, the patron saint of Thessaloniki. It is part of the site Palaeochristian and Byzantine Monuments of Thessaloniki on the list of World Heritage Sites by UNESCO since 1988.
The first church on the spot was constructed in the early 4th century AD, replacing a Roman bath. A century later, a prefect named Leontios replaced the small oratory with a larger, three-aisled basilica. Repeatedly gutted by fires, the church eventually was reconstructed as a five-aisled basilica in 629–634. This was the surviving form of the church much as it is today. The most important shrine in the city, it was probably larger than the local cathedral. The historic location of the latter is now unknown.
The church had an unusual shrine called the ciborium, a hexagonal, roofed structure at one side of the nave. It was made of or covered with silver. The structure had doors and inside was a couch or bed. Unusually, it did not hold any physical relics of the saint. The ciborium seems to have been a symbolic tomb. It was rebuilt at least once.
The basilica is famous for six extant mosaic panels, dated to the period between the latest reconstruction and the inauguration of the Byzantine Iconoclasm in 730. These mosaics depict St. Demetrius with officials responsible for the restoration of the church (called the founders, ktetors) and with children. An inscription below one of the images glorifies heaven for saving the people of Thessalonica from a pagan Slavic raid in 615.
Thessaloniki became part of the Ottoman Empire in 1430. About 60 years later, during the reign of Bayezid II, the church was converted into a mosque, known as the Kasımiye Camii after the local Ottoman mayor, Cezeri Kasım Pasha. The symbolic tomb however was kept open for Christian veneration. Other magnificent mosaics, recorded as covering the church interior, were lost either during the four centuries when it functioned as a mosque (1493–1912) or in the Great Thessaloniki Fire of 1917 that destroyed much of the city. It also destroyed the roof and upper walls of the church. Black-and-white photographs and good watercolour versions give an idea of the early Byzantine craftsmanship lost during the fire.
Following the Great Fire of 1917, it took decades to restore the church. Tombstones from the city"s Jewish cemetery - destroyed by the Greek and Nazi German authorities - were used as building materials in these restoration efforts in the 1940s. Archeological excavations conducted in the 1930s and 1940s revealed interesting artifacts that may be seen in a museum situated inside the church"s crypt. The excavations also uncovered the ruins of a Roman bath, where St. Demetrius was said to have been held prisoner and executed. A Roman well was also discovered. Scholars believe this is where soldiers dropped the body of St. Demetrius after his execution. After restoration, the church was reconsecrated in 1949.