Built between the 11th and 14th centuries, the Vianden Castle in Luxembourg has rich architecture and is one of the largest feudal residences of the European Gothic and Romanesque periods.
Luxembourg Old Quarters & Fortifications, Lussemburgo
Thanks to its strategic location, Luxembourg was for many centuries one of Europe's best fortified sites. Its Old Quarters and Fortifications have been repeatedly reinforced as Luxembourg went from the Holy Roman Emperors to the House of Burgundy, the Habsburgs, the French and Spanish Kings, etc.