The Torre dei Conti was one of the most impressive towers that dominated medieval Rome. It was built in 1238 by Richard Conti, brother of Pope Innocent III as a fortified residence for his family, the Conti di Segni. The tower stood on the border of the territory of the rival family of the Frangipani. Currently standing at 29 metres, it was once 50–60 m tall, and gained the nickname of Torre Maggiore (Major Tower) for its size. Originally covered in travertine salvaged from the ruins of the Imperial Fora, this covering was in turn stripped for use in the construction of the Porta Pia in the 16th century, designed by Michelangelo.
The upper floors were destroyed by a series of earthquakes culminating in the earthquake of 1348, after which it was abandoned until 1620, when it was rebuilt by the Papal Chamber. Other earthquakes in 1630 and 1644 caused damage which was repaired at the end of the 17th century by Pope Alexander VIII, who added two buttresses.
With the opening of the Via Cavour in the 19th century and the Via dei Fori Imperiali in the early 20th century, the tower was left isolated from other buildings. In 1937, the tower was donated by Benito Mussolini to the Arditi (Italian stormtroopers), which retained ownership until 1943. The tower contains the mausoleum of General Alessandro Parisi, whose remains are preserved in an ancient Roman sarcophagus. Parisi, who died in an automobile accident in 1938, was the leader of the Arditi.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.