Begin your journey where it all began in oxford take a guided tour in the castle and let the characters reveal their fascinating stories entrenched in the buildings 1 000 year history when william the conqueror invaded england and won the battle of hastings in 1066 oxford castle was marked by the normans as the ideal place for a motte and bailey castle today after almost one millennia oxford castle unlocked is a visitor attraction with a past stretching far beyond your imagination