line drawing map of the Walls and city within. Water
Bastion, marked number seven, at the bottom right of
the walls, runs into the Foyle at high tide.
map of the area around and beneath the city, showing
the hill the city and walls were build on and the highest
point, under Church Bastion, next to St Columb's Cathedral.
rendition of the Walled City around the time of the Great
map show the Walled City with street names and place of interest