Previously, Alcazar de Segovia was an Arab fortress built on top of a Roman fortress. Later, the fortress of Alcazar de Segovia was conquered by King Alfonso VI. King Alfonso VI and his wife, who were from England, lived there and began to expand and renovate its structure.

During the Crusades, this castle was known as Castle Gibelet. Built by the Crusaders in the 11th century as a defensive fortress, Byblos Castle now serves as a museum that can be visited by tourists.

vThis castle is located in the Baden region and served as the residence of the Margraves of Baden for about 400 years. Hohenbaden Castle was founded by King Herman II and has undergone several expansions over the years. However, now the castle is only a ruin.

According to its name, this castle is located in Cardiff, Wales. Cardiff Castle was built using the motte and bailey model by Norman colonizers on top of the ruins of a Roman fortress. Over the years, the building has undergone expansion and renovation to reach its current form.

This castle is located in Rochester, Kent, built at the request of King William II to control river crossings, so he ordered the construction of a fortress. Rochester Castle uses innovative and advanced stone for its time.

Seen from its history, the Tower of London is famous as a prison, although it was not originally built for that purpose. Initially, the Tower of London was a royal residence equipped with fort walls and a moat. Currently, it houses the crown jewels and is included in the UNESCO World Heritage Site.

Two individuals who ordered the construction of Hohensalzburg Castle in 1077 were Gebhard I of Helfenstein. Hohensalzburg Castle, a fortress, later underwent building expansions. Over the centuries, this castle was also used by the Archbishop of Salzburg. Currently, Hohensalzburg Castle is one of the main tourist destinations in Salzburg.

The following is the translation of the 'Bahasa' text to 'English' while preserving any html tags: "Castle Hohenwerfen was built by Archbishop Gebhard. Its construction began in 1075 and was completed in 1078. In addition to being a castle, this place also served as a prison and military base. Currently, Castle Hohenwerfen is owned by the state of Salzburg."

"The Windsor Castle is one of the buildings owned by the Royal Family. Its construction began during the reign of King William, and since King Henry I, every king has used it as their official residence. Currently, Windsor Castle has become one of the popular tourist destinations."

Beside Windsor Castle, King William the Conqueror also ordered the construction of Warwick Castle. However, after 200 years, Warwick Castle was rebuilt to adapt to the changing times. Inside this castle, there is a Tower and an Underground Caesar's Prison that was added in 1350. Currently, the ownership of Warwick Castle is under the Tussauds Group.

In the past, Prince Palatine Ezzo is believed to have ordered the construction of a castle for himself and his family. The castle that was built is known as Reichsburg Cochem and was constructed in the Gothic Revival architectural style. After suffering damage in 1688, the castle became the property of the city of Cochem until today.

The Château de Doué-la-Fontaine is located in Doué-en-Anjou and serves as a fortress for the entire commune. Originally known as Motte de la Chapelle, this castle was built on Carolingian foundations in the 9th century. Despite its current suboptimal condition, its grounds can still be visited.

Located in Prague, this castle is famous for its mysterious appearance and is considered haunted. Prague Castle also holds the record as the largest castle in the world, with an area reaching up to 70,000 square meters. Originally built as a fortress, Prague Castle now serves as the office of the President of the Czech Republic.

Currently, the Ghumdan Palace no longer functions as a castle, but the ruins of the building can still be visited. Located in the city of Sana'a, this palace is centuries old and is believed to have been built by a man named Sem, the son of Noah. The construction of the Ghumdan Palace began in the 3rd century and was completed in the 8th century. In addition, the Ghumdan Palace is included in the UNESCO World Heritage Site.