Kazan Cathedral is dedicated to Our Lady of Kazan, probably the most venerated icon in Russia. The construction was started in 1801 and continued for ten years (supervised by Alexander Sergeyevich Stroganov). Upon its completion the new temple replaced the Church of Nativity of the Theotokos, which was disassembled when the Kazan Cathedral was consecrated. It was modelled by Andrey Voronikhin after St. Peter's Basilica in Rome. Although the Russian Orthodox Church strongly disapproved of the plans to create a replica of a Catholic basilica in Russia's then capital, several courtiers supported Voronikhin's Empire Style design.
After Napoleon invaded Russia in 1812, and the commander-in-chief Mikhail Kutuzov asked Our Lady of Kazan for help, the church's purpose was to be altered. The Patriotic War over, the cathedral was perceived primarily as a memorial to the Russian victory against Napoleon. Kutuzov himself was interred in the cathedral in 1813; and Alexander Pushkin wrote celebrated lines meditating over his sepulchre. In 1815, keys to seventeen cities and eight fortresses were brought by the victorious Russian army from Europe and placed in the cathedral's sacristy. In 1837, Boris Orlovsky designed two bronze statues of Kutuzov and Barclay de Tolly in front of the cathedral.
In 1876, the Kazan demonstration, the first political demonstration in Russia, took place in front of the church. After the Russian Revolution of 1917, the cathedral was closed. In 1932 it was reopened as the pro-Marxist 'Museum of the History of Religion and Atheism.' Services were resumed in 1992, and four years later the cathedral was returned to the Russian Orthodox Church. Now it is the mother cathedral of the metropolis of St. Petersburg.
The cathedral's interior, with its numerous columns, echoes the exterior colonnade and is reminiscent of a palatial hall, being 69 metres in length and 62 metres in height. The interior features numerous sculptures and icons created by the best Russian artists of the day. A wrought iron grille separating the cathedral from a small square behind it is sometimes cited as one of the finest ever created.References:
The Arch of Constantine is situated between the Colosseum and the Palatine Hill. It was erected by the Roman Senate to commemorate Constantine I's victory over Maxentius at the Battle of Milvian Bridge in 312. Dedicated in 315, it is the largest Roman triumphal arch. The arch spans the Via triumphalis, the way taken by the emperors when they entered the city in triumph.
Though dedicated to Constantine, much of the decorative material incorporated earlier work from the time of the emperors Trajan (98-117), Hadrian (117-138) and Marcus Aurelius (161-180), and is thus a collage. The last of the existing triumphal arches in Rome, it is also the only one to make extensive use of spolia, reusing several major reliefs from 2nd century imperial monuments, which give a striking and famous stylistic contrast to the sculpture newly created for the arch.
The arch is 21 m high, 25.9 m wide and 7.4 m deep. Above the archways is placed the attic, composed of brickwork reveted (faced) with marble. A staircase within the arch is entered from a door at some height from the ground, on the west side, facing the Palatine Hill. The general design with a main part structured by detached columns and an attic with the main inscription above is modelled after the example of the Arch of Septimius Severus on the Roman Forum.