Basilique Saint-Nicolas is a basilica in the town of Saint-Nicolas-de-Port. It is a pilgrimage site, supposedly holding relics of Saint Nicholas brought from Italy. Nicolas became the patron saint of the Duchy of Lorraine. The current basilica was built in the 15th and 16th centuries and has fine Renaissance painted glass windows by Nicolas Droguet of Lyon, Valentin Bousch of Strasbourg, Hans von Kulmbach and Veit Hirsvogel from Nuremberg, Georges Millereau and other unknown artists, as well as 19th century replacements for lost glass works. It is a French Monument historique since 1840, and a minor basilica since 1950.
References:Carlsten is a stone fortress built on the orders of King Carl X of Sweden following the Treaty of Roskilde, 1658 to protect the newly acquired province of Bohuslän from hostile attacks. The site of Marstrand was chosen because of its location and its access to an ice free port. Initially a square stone tower was constructed, but by 1680 it was reconstructed and replaced by a round shaped tower. Successive additions to the fortress were carried out, by the inmates sentenced to hard labour, until 1860 when it was reported finished. The fortress was decommissioned as a permanent defense installation in 1882, but remained in military use until the early 1990s.
The fortress was attacked and sieged twice falling into enemy hands. In 1677 it was conquered by Ulrik Frederick Gyldenløve, the Danish military commander in Norway and in 1719 by the Norwegian Vice-Admiral Tordenskjold. At both occasions the fortress was returned to Swedish control through negotiations and treaties.