The buildings of former Daoulas Abbey - a cloister and a 12th century font, an oratory and a monumental 16th century fountain, together with the 18th century conventual house - are an exceptional tribute to Breton art from the 10th century onwards. It was established by Guyomarch IV de Léon in 1173, but there has been at least a church since the 6th century. The former abbey was raided and looted by Vikings.
Daoulas Abbey was secularized in 1771-1792 and moved as a private property. The abbey has been renowned since 1986 for the quality and originality of its archaeological, historical or ethnological exhibitions organised in collaboration with some of the most known world wide museums. The abbey houses a superb medicinal garden with over 250 species. It is still structured and organised like most middle age/renaissance convent or monastery gardens.
References:The Walls of Constantinople are a series of defensive stone walls that have surrounded and protected the city of Constantinople (today Istanbul) since its founding as the new capital of the Roman Empire by Constantine the Great. With numerous additions and modifications during their history, they were the last great fortification system of antiquity, and one of the most complex and elaborate systems ever built. They were also the largest and strongest fortification in both the ancient and medieval world.
Initially built by Constantine the Great, the walls surrounded the new city on all sides, protecting it against attack from both sea and land. As the city grew, the famous double line of the Theodosian Walls was built in the 5th century. Although the other sections of the walls were less elaborate, they were, when well-manned, almost impregnable for any medieval besieger.