Smolensk Kremlin was built between 1595 and 1602, during the reign of Tsars Fyodor I Ioannovich and Boris Godunov. The length of the walls is about 6.5 kilometres, of which less than the half was preserved. The fortifications were built under supervision of the architect Fyodor Kon. The Smolensk Kremlin is classified as an architectural monument protected at the federal level, and also has a great historical significance, in particular, as the fortress protecting the Russian state from the west over centuries.
Smolensk historically had a great significance for the defence, and this is why Russian rulers paid considerable attention for its fortifications. In the spring of 1554, Tsar Ivan the Terrible ordered to build a new tall wooden fortress. After the development of artillery, it became clear that a wooden fortress is no more suiteble for the defence, and in the end of the 16th century it was decided to build a new stone fortress at the place of the old one.
In December 1595, the preparations for the construction started after the official decree was issued. The construction works were very intense and were performed daily from sunrise to sunset. The construction workers, however, lived in harsh conditions, and revolted in 1599 because of hunger, cold, and diseases. In the summer of 1597 long and heavy rains flooded all the trenches and ditches, and the construction workers had to strengthen the landslide soil by piles. In 1600, because of the heat and heavy rains, a large amount of crops was lost in Russia, causing the famine. The construction of the new fortress used the old existing fortifications, so that in some places the wall was built on top of them, and in certain areas the new fortress was extended beyond the limits set by the old one. The construction started from the western side of the fortress.
Several sections of the wall have survived, the eastern section with nine towers, the south-western section with five towers, and the northern section with three towers. The most famous remaining tower is the round-cornered tower named Veselukha. This name was given to it because of the nice view which opens from the tower. The Main Gate Tower was Frolovskaya (Dnieper Tower), through which was the exit to the capital of the Russian state. The second most important was Molohovskaya tower, opens the way to Kiev, Krasny and Roslavl.References:
Medvedgrad is a medieval fortified town located on the south slopes of Medvednica mountain, approximately halfway from the Croatian capital Zagreb to the mountain top Sljeme. For defensive purposes it was built on a hill, Mali Plazur, that is a spur of the main ridge of the mountain that overlooks the city. On a clear day the castle can be seen from far away, especially the high main tower. Below the main tower of the castle is Oltar Domovine (Altar of the homeland) which is dedicated to Croatian soldiers killed in the Croatian War of Independence.
In 1242, Mongols invaded Zagreb. The city was destroyed and burned to the ground. This prompted the building of Medvedgrad. Encouraged by Pope Innocent IV, Philip Türje, bishop of Zagreb, built the fortress between 1249 and 1254. It was later owned by bans of Slavonia. Notable Croatian and Hungarian poet and ban of Slavonia Janus Pannonius (Ivan Česmički) died in the Medvedgrad castle on March 27, 1472.
The last Medvedgrad owners and inhabitants was the Gregorijanec family, who gained possession of Medvedgrad in 1562. In 1574, the walls of Medvedgrad were reinforced, but after the 1590 Neulengbach earthquake, the fortress was heavily damaged and ultimately abandoned. It remained in ruins until the late 20th century, when it was partly restored and now offers a panoramic view of the city from an altitude of over 500 meters.