What is the oldest part of Dublin?

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Tags

1. #encompassing
2. #around
3. #cathedral
4. #visible
5. #castle
6. #church
7. #taking
8. #still
9. #history
10. #vikings
11. #settlement
12. #became
13. #dublin
14. #christ
15. #patrick
16. #oldest
17. #original
18. #remnants
19. #walls