I can't find them at all in the UI. Not the store, just where my current ones are.
Answer
Answer List
anoymous
Tap on the arrow at the side of the screen, then tap the box, then you will see how many heirlooms you have.
anoymous
Where is the heirlooms box?
anoymous
Do you have the heirloom box? You can click on that to see which ones you have. There's a way to see them from your inventory as well, I just forget how to get to them. I kept clicking around until I found them..
SimmermaN
Heirloom was part of the previous version of the game. This is no longer existing in the latest version.