Havis Amanda is a nude female statue sculpted by Ville Vallgren (1855-1940). He made it 1906 in Paris, but was not erected at its present location at the Market Square in Kaartinkaupunki until 1908. Havis Amanda is one of Vallgren's Parisian Art Nouveau works. She is a mermaid who stands on seaweed as she rises from the water, with four fish spouting water at her feet and surrounded by four sea lions. She is depicted leaning backwards as if to say goodbye to her element. Vallgren's intention was to symbolize the rebirth of Helsinki. The height of the statue is 194 centimetres and with the pedestal it stands 5 metres tall. According to Vallgren's letters the model for the statue was a then 19-year-old Parisian lady, Marcelle Delquini.
Havis Amanda is the most popular statue in Helsinki. Every year on 30th of April it serves as a centrepiece for the celebrations. Students of the local universities put a cap on the statue on an elaborate ceremony.
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.