The Rotunda of the Holy Cross is the oldest Romanesque rotunda in Prague. It was built in the 11th century. The first mention of the Rotunda of the Holy Cross is from 1365, but it was probably built already at the end of the 11th century. It is a small simple building with a rounded nave and an apse. A lantern at the cupola has a gilt cross, a crescent moon and an eight-pointed star at the top.
Rotunda of the Holy Cross was probably a private chapel belonging to some of the mansions in Prague Old Town. There used to be a parsonage nearby and a cemetery around.
Dominicans gained the rotunda in 1625. Emperor Joseph II. abolished the chapel in 1784, as well as many other churches, and it became a private storage. It was planned to demolish the rotunda in 1860 because of building a new house at the place, but it was finally saved.
There are remains of Gothic wall paintings from 14 th century inside. The most valuable Gothic fresco is the “Three Magi veneration”. There are also some remains of tombstones from 13 th century.
The legend about the origin of the rotunda says, that there used to be a lake at the place originally. A crucified girl, punished for her Christian belief, was thrown there with her cross. The cross reared up during a storm, which was regarded as a God´s sign. A large dozy cross was really found in the foundations of the rotunda, when it was restored.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.