This is the 9383rd most frequent Russian word.
территорию
"Territory."
The word 'территорию' here means the area or grounds associated with the old castle.
Мы посетили территорию старого замка.
We visited the territory of the old castle.
The word 'территорию' is used to refer to an area or space that has been extended or enlarged.
Они расширили территорию своего сада.
They expanded the territory of their garden.
The word 'территорию' denotes a nearby or surrounding area that is being monitored or protected.