The Kerimäki Church is the largest wooden church in the world. Designed by Anders Fredrik Granstedt and built between 1844 and 1847, the church has a length of 45 metres (148 ft), a width of 42 m (138 ft), a height of 37 m (121 ft) and a seating capacity of more than 3,000. Altogether there can be 5,000 people at a time in the church.
It has been rumoured that the size of the church was the result of a miscalculation when it was built (supposedly the architect was working in centimetres, which the builder took to be inches, which are 2.54 times larger). Further studies, however, have shown that the church was actually intended to be as big as it is, so it could easily accommodate a half of the area's population at the same time.
During wintertime, services are held in a smaller "winter church" (built in 1953), since the main building has no heating.
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.