it's because they're ancient!
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Right now.
Nightingale floors
Right now.
Castles were large fortified structures built to guard a particular area and mark it. So castles around the country showed the various towns in it.
There Was Castles Before 1066 But They Were Not Recorded So Therefore No - One Knows About Them, But There Definitely Was Castles Before Then, Hope This Helps xx
Castles usually have a mote, towers, and long halls. They also have special defenses inside and outside of the structure.
it holds a special record (thats a clue but it doesnt answer your question!)
Medieval castles evolved because the old Motte and Bailey castles where easier to set alight and where not very strong, so they made stone castles to improve defence.
Because the number of castles is so great it is recommended to see the link below.
Because vampires need to be in the dark so they use castles to store their blood and coffins!!!
THEY STARTED TO MAKE TE CASTLES ROUND SO IT WAS HARDER TO KNOCK DOWN BECAUST THEY WOULD START BY KNOCKING DOWN THE CORNERS TO MAKE IT EASIER SO THEY MADE THE CASTLES ROUND