they looked very grand and big
Easy...
Castles were built only for kings because they were used to keep the kings built.
castles
America's Castles - 1994 Cotton Kings was released on: USA: 1996
usually people of high royalty like kings to attack enemy castles
no
kings
There still are kings and queens and probably still castles but I think you're referring to the medieval time.
No, not all kings live in castles. While some kings historically lived in castles, many modern monarchs live in more modern residences or palaces. The use of castles as royal residences has evolved over time.
hill with wood
Ottonian castles look like Medieval palaces that tower over the rest of the land. They were often built on hills or the tops of mountains and made of stone.
to protect kings queens and princess