There may have been two or three wooden churches in Kökar since the last half of 14th century. During the 16th century a Franciscan monastery was founded on Hamnö island. This place became a spiritual and cultural centre for the entire archipelago.
Today the ruins of monastery share their site with current Kökar's church, which is probably third in this place. It was built between 1769 and 1784 in charge of Antti Piimänen (he died before church was completed). Stones of previous monasteries were used in the construction. In the chapel beside the church are archaeological excavations on Hamnö.
Built around AD 90 to entertain the legionaries stationed at the fort of Caerleon (Isca), the impressive amphitheatre was the Roman equivalent of today’s multiplex cinema. Wooden benches provided seating for up to 6,000 spectators, who would gather to watch bloodthirsty displays featuring gladiatorial combat and exotic wild animals.
Long after the Romans left, the amphitheatre took on a new life in Arthurian legend. Geoffrey of Monmouth, the somewhat imaginative 12th-century scholar, wrote in his History of the Kings of Britain that Arthur was crowned in Caerleon and that the ruined amphitheatre was actually the remains of King Arthur’s Round Table.
Today it is the most complete Roman amphitheatre in Britain.