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:
Louisenlund is a site with one of Denmark's largest collection of megaliths. Some 50 stones standing upright among the trees, many of them over 2.5 metres high. The megaliths, which bear no inscription, stand on low mounds or over graves where the remains of burnt bones are buried. In the early Bronze Age and late Iron Age (1100 BC), it appears to have been common practice to set megaliths over graves of this kind. The stones stand alone or in small groups. As the site has not been archeologically investigated, it is not known why the stones were raised there. Another important megalithic site on Bornholm is Gryet, a small wooded area 5 kilometres west of Nexø. Originally it had more than 60 megaliths. Some have now been removed while half those remaining have fallen to the ground. The highest of them, once standing on the mound towards the south of the wood, was removed in the 17th century to be used as a gravestone. Louisenlund was bought by King Frederik VII when he visited Bornholm in 1851. He named it after his mistress, Countess Louise Danner.