Old Sarum is the site of an ancient hill fort, the oldest settlement that is modern Salisbury. It’s a much more interesting heritage site than Stonehenge, and only half the price to enter!
This view shows part of the ruined royal palace.
I don’t know what this room is or was, but it gave me a sense of there is no escape.
These ruined walls were part of the palace too.
There is a footpath that goes around the top of the motte.
And here’s a shot across the dry moat, showing the spire of Salisbury cathedral.