Forum Hadriani was the northern-most Roman city on the European continent and the second oldest city of The Netherlands. It was located in the Roman province Germania Inferior and is mentioned on the Tabula Peutingeriana, a Roman road map.
The site Forum Hadriani formed the nucleus of the civitas of the Cananefates, who lived west of the Batavians. It was situated along the Fossa Corbulonis or Corbulo-canal. This waterway was established about 47 CE by the Roman general Gnaeus Domitius Corbulo, forming an important shortcut between the rivers Rhine and Meuse. After the Batavian Rebellion, in which they participated, the Cananefates became loyal allies of the Romans.
In 121 emperor Hadrian made a long voyage along the northwestern border of the empire, during which he visited the Cananefate town. He gave the town his own name, Forum Hadriani (Hadrian’s Market). An alternate name, maybe the only official name, was Municipium Aelium Cananefatium (Aelius being the family name of Hadrian). The shortened version of this name, MAC, has been found engraved in a couple of Roman milestones found in the neighbourhood.
About 270 CE, after several plagues and attacks by Saxon pirates, the Romans abandoned Forum Hadriani.
In 1771 a bronze right hand was excavated during garden work on the estate Arentsburg. This hand was used by Étienne Maurice Falconet as model for the equestrian statue of Peter the Great, The Bronze Horseman. The first scientific excavations at the site of Forum Hadriani were carried out by Caspar Reuvens, between 1827-1833. Reuvens held the first professorship Archaeology ever, worldwide. Reuvens died before he could publish his findings. More excavations were done between 1908 and 1915 by Jan Hendrik Holwerda, he published the results of Reuvens together with his own discoveries in a comprehensive monograph in 1923.References:
The Mosque–Cathedral of Córdoba, also known as the Great Mosque of Córdoba and the Mezquita is regarded as one of the most accomplished monuments of Moorish architecture.
According to a traditional account, a small Visigoth church, the Catholic Basilica of Saint Vincent of Lérins, originally stood on the site. In 784 Abd al-Rahman I ordered construction of the Great Mosque, which was considerably expanded by later Muslim rulers. The mosque underwent numerous subsequent changes: Abd al-Rahman II ordered a new minaret, while in 961 Al-Hakam II enlarged the building and enriched the Mihrab. The last of such reforms was carried out by Almanzor in 987. It was connected to the Caliph"s palace by a raised walkway, mosques within the palaces being the tradition for previous Islamic rulers – as well as Christian Kings who built their palaces adjacent to churches. The Mezquita reached its current dimensions in 987 with the completion of the outer naves and courtyard.
In 1236, Córdoba was conquered by King Ferdinand III of Castile, and the centre of the mosque was converted into a Catholic cathedral. Alfonso X oversaw the construction of the Villaviciosa Chapel and the Royal Chapel within the mosque. The kings who followed added further Christian features, such as King Henry II rebuilding the chapel in the 14th century. The minaret of the mosque was also converted to the bell tower of the cathedral. It was adorned with Santiago de Compostela"s captured cathedral bells. Following a windstorm in 1589, the former minaret was further reinforced by encasing it within a new structure.
The most significant alteration was the building of a Renaissance cathedral nave in the middle of the expansive structure. The insertion was constructed by permission of Charles V, king of Castile and Aragon. Artisans and architects continued to add to the existing structure until the late 18th century.
The building"s floor plan is seen to be parallel to some of the earliest mosques built from the very beginning of Islam. It had a rectangular prayer hall with aisles arranged perpendicular to the qibla, the direction towards which Muslims pray. The prayer hall was large and flat, with timber ceilings held up by arches of horseshoe-like appearance.
In planning the mosque, the architects incorporated a number of Roman columns with choice capitals. Some of the columns were already in the Gothic structure; others were sent from various regions of Iberia as presents from the governors of provinces. Ivory, jasper, porphyry, gold, silver, copper, and brass were used in the decorations. Marvellous mosaics and azulejos were designed. Later, the immense temple embodied all the styles of Morisco architecture into one composition.
The building is most notable for its arcaded hypostyle hall, with 856 columns of jasper, onyx, marble, granite and porphyry. These were made from pieces of the Roman temple that had occupied the site previously, as well as other Roman buildings, such as the Mérida amphitheatre. The double arches were an innovation, permitting higher ceilings than would otherwise be possible with relatively low columns. The double arches consist of a lower horseshoe arch and an upper semi-circular arch.