St. Nicholas' Cathedral is a significant, well preserved example of northern German Late Brick Gothic; the church features three aisles, two transepts and a single-aisled ambulatory. Particularly impressive is the church's northern tiered gable. The church features 22 stained glass features considered to be treasures of international significance, a feature of the cathedral elevating the building to a heritage site of Europe-wide importance.
The cathedral was founded in 1188 by Margrave Otto II. The construction of present building was begun in 1423. In World War II the cathedral suffered damages during an air raid on April 8, 1945. The vault of the south transept and parts of the cloister were destroyed. The medieval windows had been removed before and survived.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.