It is a royal residence located in Windsor, Berkshire, England. Closely connected to the British royal family, it has almost carried a thousand years of architectural history. Founded in the 11th century, it was built by William the Conqueror after the invasion of England in Normandy. Since the reign of Henry I (1100-1135), it has been used by reigning monarchs and is the longest occupied palace in Europe. Inside the castle walls, there is also the 15th century St. George's Church, which historian John Martin Robinson considers to be "one of the outstanding achievements of British vertical Gothic design".

It is a historic building in London, England, built in the 11th century and ordered by William I. It is not only a royal palace, but also a prison, fortress, arsenal, mint, royal zoo, and national monument.. The most famous building of the Tower of London is the White Tower, which is an outstanding representative of medieval military architecture and the core of the entire Tower of London complex. Witnessing the historical changes of Britain, it was once a symbol of royal power and a venue for political struggles. Nowadays, the Tower of London is a popular tourist attraction with a collection of gems from the British Crown, attracting thousands of visitors every year.

A medieval castle located in Cosenza, Italy. This castle was built in the 11th century by the Normans after conquering the region as a symbol of their power and defensive fortifications. The design incorporates typical Norman architectural features, including sturdy stone walls and towers to resist enemy attacks. Not only is it an important location for military defense, but it is also the center of cultural and social activities in the region. It has witnessed many historical events, including wars, political changes, and social development. Nowadays, it is an important landmark in Kosenza city, where you can enjoy spectacular architectural art and gain a deeper understanding of its rich history.