The Albrechtsburg is a Late Gothic castle that dominates the town centre of Meissen. It stands on a hill above the river Elbe, adjacent to the Meissen Cathedral.
By 929 King Henry I of Germany had finally subdued the Slavic Glomacze tribe and built a fortress within their settlement area, situated on a rock high above the Elbe river. This castle, called Misnia after a nearby creek, became the nucleus of the town and from 965 the residence of the Margraves of Meissen, who in 1423 acquired the Electorate of Saxony.
From 1464 Elector Ernest of Saxony ruled jointly with his younger brother Albert the Bold and both had the present-day castle erected from 1471 on. The masterpiece of court builder Arnold of Westphalia, it was constructed solely as a residence, not as a military fortress, the first German castle built for such a purpose. When the brothers divided the Wettin lands by the 1485 Treaty of Leipzig, the castle of Meissen fell to Albert. Though Albert's son Duke George the Bearded resided at the Albrechtsburg, it was soon superseded by Dresden Castle as the new seat of the Wettin Albertinian line.
In 1710 King Augustus II the Strong established the Königlich-Polnische und Kurfürstlich-Sächsische Porzellan-Manufaktur, which was the first European hard-paste porcelain manufacture, at the castle under the supervision of Johann Friedrich Böttger. Meissen porcelain was produced at the Albrechtsburg until manufacturing moved to its present location in 1863.References:
The city walls of Avila were built in the 11th century to protect the citizens from the Moors. They have been well maintained throughout the centuries and are now a major tourist attraction as well as a UNESCO World Heritage Site. Visitors can walk around about half of the length of the walls.
The layout of the city is an even quadrilateral with a perimeter of 2,516 m. Its walls, which consist in part of stones already used in earlier constructions, have an average thickness of 3 m. Access to the city is afforded by nine gates of different periods; twin 20 m high towers, linked by a semi-circular arch, flank the oldest ones, Puerta de San Vicente and Puerta del Alcázar.