Liinmaa Castle ("Vreghdenborch") was a medieval castle in Eura. In 1367 Albrecht von Mecklenburg, the king of Sweden, ordered to demolish a castle in Kokemäki. It was replaced by two new castles, one in Liinmaa and another in Linnaluoto (Aborch). Liinmaa castle contained two inner ground walls, wooden structures and a moat. The story of Liinmaa castle was very short: it was abandoded in the beginning of the 15th century when administration was moved to Kastelholm and Turku Castles.
By the legend Liinmaa was also a camp of pirates. This may refer to Victual Brothers, a brotherhood hired in 1392 by the Albrecht von Mecklenburg to fight against Denmark.
Nowadays only some earth walls remains the history of Liinmaa castle.
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.