Saint Wenceslas Cathedral is a neo-gothic cathedral in Olomouc. The square was named after Saint Wenceslaus I, Duke of Bohemia on the thousandth anniversary of his death in 1935. The cathedral is also named after him.
The cathedral began in the Romanesque style and was consecrated in 1131. Extensive Gothic modifications were made in 13th and 14th century. Czech king Wenceslaus III of Bohemia was murdered in a nearby house of the former dean of the cathedral on August 4, 1306. Wenceslaus III was the last of the male Přemyslid rulers of Bohemia.
Gothic revival changes, which included refacing the building, rebuilding the west front and the construction of the central tower, were made during 1883–1892. These were designed by Gustav Meretta and R. Völkel. The cathedral's main tower is 100,65 metres high, making it the 4th tallest building in the Czech Republic.
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.