Ryazan's most famous site is probably the magnificent Dormition Cathedral. It was built between 1693 and 1699 by the architect Yakov Bukhvostov in the Naryshkin baroque style. In form it consists of a tall red brick structure decorated with carved white stone window frames and topped with five central domes.
Inside the cathedral has a towering iconostasis 27 metres in height which includes two miracle-working icons: the Our Lady of Murom Icon which dates from the 12th century and the Our Lady of Feodotievo which was discovered in the nearby village of Fedotievo in 1487. The cathedral is now the Summer Eparchial Cathedral of the Ryazan and Mikhailov Eparchy. It is only open in the summer.
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.