December 13, 2012 10.20 am This story is over 134 months old

Video: Preserving Lincoln Castle walls

Sneak peek: In the sixth month of preservation work on the Lincoln Castle walls, take a unique look inside the work so far.

In the sixth month of preservation work on the Lincoln Castle walls, take a look at the work so far, along with views of Lincoln that haven’t been seen by the general public for hundreds of years.

This is the first phase of the work underway, as part of a £20 million project to completely revamp Lincoln Castle.

Part of the project will be a full tour of the castle walls, with entrances from the north, east and west curtain walls.