The St. Ursus Cathedral in Solothurn is dedicated to Ursus of Solothurn, who was a 3rd-century Roman Christian venerated as a saint. His his body is located under the cathedral. The first church on the site was built in the Early Middle Ages. St. Ursus of Solothurn was venerated in the city by the 5th century. By 870 there was a college of canons and presumably a collegiate church in Solothurn. A Romanesque church might have existed, but there is no written or archeological evidence to support or refute it.
The first documented record of the Gothic church comes from 1294, while the altars were ordained in 1293 and 1298. It is likely that the twin towers were damaged in the 1356 Basel earthquake damaged, but there is no reliable sources attesting to the damage. It seems likely, since in 1360 the single Wendelstein tower was built above the church and a gothic facade was added to the west face of the church.
The choir was rebuilt in 1544, while the crypt was re-covered. The nave was rebuilt in 1644 and widened. The sacristy was extended in 1664.
By the 18th century the Gothic church was in a poor condition. On 25 March 1762 the Wendelstein tower collapsed forcing the city to begin planning to replace the building. Paolo Antonio Pisoni (1738-1804) took over construction in 1772. On 26 September 1773 the new church was dedicated by the Bishop of Lausanne. The western facade of the cathedral is a monumental white stone neoclassical structure.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.