Radziwiłł Palace is a Late Renaissance palace in the Old Town of Vilnius. It had been the second palace of Radziwiłłs by importance in Vilnius and the largest one. It is likely that Mikołaj 'the Black' Radziwiłł"s wooden Vilnius mansion was on the same site, but the current building was constructed by the order of Janusz Radziwiłł from 1635 until 1653, according to the design by Jan Ullrich. The building fell in ruin after the Muscovite invasion 1655-1660 and remain mostly neglected for centuries. It was further devastated during World War I and only the northern wing of the palace survived. Eventually, it was restored in 1980s and a division of the Lithuanian Art Museum is located there today. A part of the palace is still in need of renovation today.
Being the only survived Renaissance palace in Vilnius it has features of the Netherlands Renaissance as well as Manneristic decorations native to the Lithuanian Renaissance architecture. Its original layout and symmetry of structural elements was distinctive to the palaces of the Late French Renaissance resembling that of Château de Fontainebleau and Luxembourg Palace in Paris.References:
Roman Walls of Lugo are an exceptional architectural, archaeological and constructive legacy of Roman engineering, dating from the 3rd and 4th centuries AD. The Walls are built of internal and external stone facings of slate with some granite, with a core filling of a conglomerate of slate slabs and worked stone pieces from Roman buildings, interlocked with lime mortar.
Their total length of 2117 m in the shape of an oblong rectangle occupies an area of 1.68 ha. Their height varies between 8 and 10 m, with a width of 4.2 m, reaching 7 m in some specific points. The walls still contain 85 external towers, 10 gates (five of which are original and five that were opened in modern times), four staircases and two ramps providing access to the walkway along the top of the walls, one of which is internal and the other external. Each tower contained access stairs leading from the intervallum to the wall walk of town wall, of which a total of 21 have been discovered to date.
The defences of Lugo are the most complete and best preserved example of Roman military architecture in the Western Roman Empire.
Despite the renovation work carried out, the walls conserve their original layout and the construction features associated with their defensive purpose, with walls, battlements, towers, fortifications, both modern and original gates and stairways, and a moat.
Since they were built, the walls have defined the layout and growth of the city, which was declared a Historical-Artistic Ensemble in 1973, forming a part of it and becoming an emblematic structure that can be freely accessed to walk along. The local inhabitants and visitors alike have used them as an area for enjoyment and as a part of urban life for centuries.
The fortifications were added to UNESCO"s World Heritage List in late 2000 and are a popular tourist attraction.