In the third century AD, the city of Vannes, called Darioritum, acquires the right to fortify. Thus, west of the Gallo-Roman city, a castrum was built. During the Middle Ages, the castrum becomes the centre of the city. Extended in the 14th century, it is reinforced in the 15th century. Over the following two centuries, the ramparts are modernised with the construction of the Garenne buttress. Several medieval gates has been survived, like Tour du Connétable and Château de l'Hermine (former castle, transformed into a palace in the 17th century). Today there is a nice view from the park Jardins des Remparts to the walls.
Stavanger Cathedral is Norway's oldest cathedral. Bishop Reinald, who may have come from Winchester, is said to have started construction of the Cathedral around 1100. It was finished around 1150, and the city of Stavanger counts 1125 as its year of foundation. The Cathedral was consecrated to Swithin as its patron saint. Saint Swithun was an early Bishop of Winchester and subsequently patron saint of Winchester Cathedral. Stavanger was ravaged by fire in 1272, and the Cathedral suffered heavy damage. It was rebuilt under bishop Arne, and the Romanesque Cathedral was enlarged in the Gothic style.
In 1682, king Christian V decided to move Stavanger's episcopal seat to Kristiansand. However, on Stavanger's 800th anniversary in 1925, king Haakon VII instated Jacob Christian Petersen as Stavanger's first bishop in nearly 250 years.During a renovation in the 1860s, the Cathedral's exterior and interior was considerably altered. The stone walls were plastered, and the Cathedral lost much of its medieval looks. A major restoration led by Gerhard Fischer in 1939-1964 partly reversed those changes. The latest major restoration of the Cathedral was conducted in 1999. Andrew Lawrenceson Smith is famous for his works here.