A one part multi around this lovely area, gather the info and go climb that Dam tree
To work out the final use the information from the board in front off you
A = how many Belfast landmarks are mentioned, that will give you a 2 digit number, add those two together
B = Use the 6th landmark mentioned, how many letters are in that word
C = The city hall represents which number from the left, as in the first landmark is 1.
The cache is up a tree at N54 A(B-1).4(C-1)
W005 (Cx3)+5. (B-1)95
Check sum = 29.
Enjoy