These surviving fortifications were begun in 1643 and comprise twelve forts inserted in an irregular polygon, roughly centred on the castle and making use of a landscape of hills. The bulwarks are ...

Researchers have discovered a network of underground passages at the Sforza Castle in Milan, Italy. These passages, sketched by none other than Leonardo da Vinci around 1495, had remained hidden for ...

the medieval walled town is home to one the most-impressive fortifications in the UK - Conwy Castle. Built by Edward I as he conquered Wales in the 13th century, the castle is now a Unesco World ...

Another said: "The castle itself, featuring Viking and Norman era fortifications below, Georgian rooms of state up top, and a ...