The Golden Gate of Vladimir, constructed between 1158 and 1164, is the only preserved ancient Russian city gate. A museum inside focuses on the history of the Mongol invasion of Russia in the 13th century.
The Golden Gates existed in the holiest cities of Eastern Orthodoxy: Jerusalem, Constantinople, and Kiev. On making Vladimir his capital, Andrew the Pious aspired to emulate these structures, commissioning a lofty tower over the city's main gate to be erected in limestone and lined with golden plaques. According to ancient Russian chronicles, the masons were invited from Friedrich Barbarossa. The main arch used to stand 15 meters tall. The structure was topped with a barbican church dedicated to the Deposition of the Virgin's Robe and symbolizing the Theotokos's protection of Andrew's capital.
The gate survived the Mongol destruction of Vladimir in 1237. By the late 18th century, however, the structure had so deteriorated that Catherine the Great was afraid to pass through the arch for fear of its tumbling down. In 1779, she ordered detailed measurements and drawings of the monument to be executed. In 1795, after many discussions, the vaults and barbican church were demolished. Two flanking round towers were constructed in order to reinforce the structure, and artisans then reconstructed the barbican, following the drawings made in 1779.
References:The Church of St Donatus name refers to Donatus of Zadar, who began construction on this church in the 9th century and ended it on the northeastern part of the Roman forum. It is the largest Pre-Romanesque building in Croatia.
The beginning of the building of the church was placed to the second half of the 8th century, and it is supposed to have been completed in the 9th century. The Zadar bishop and diplomat Donat (8th and 9th centuries) is credited with the building of the church. He led the representations of the Dalmatian cities to Constantinople and Charles the Great, which is why this church bears slight resemblance to Charlemagne's court chapels, especially the one in Aachen, and also to the Basilica of San Vitale in Ravenna. It belongs to the Pre-Romanesque architectural period.
The circular church, formerly domed, is 27 m high and is characterised by simplicity and technical primitivism.