The following are all snippets of artworks you can find in the art gallery's permanent Northern Spirit exhibition. It is free to enter but you may wish to turn up when the gallery is open : Monday closed. Tuesday to Saturday 10am-5pm and Sunday it is open from 2pm-5pm.
To claim a smiley you simply need to identify which snippet belongs to which painting and answer the corresponding question. The final location of the cache is not in the gallery itself.
A=The last digit of the year painted.
B=The last digit of the year the artist was born.
C=How many white globes?
D=The number of letters in the artist's surname.
E=The third digit of the year of the view.
F=The second digit of the year painted.
G=The number of people sitting down in the picture.
H=The number of dogs in the picture.
J=The number of characters in the father's name who was saved.
K=The last digit of the year painted (about).
L=The number of characters in the artist's Christian name.
M=The number of characters in the artist's surname.
N=Each of the two words of the name of the boat has this number of characters.
The cache can be found at : NAB CD.EFG W00H JK.LMN
You can validate your multi solution with certitude.