Yep. How many of them are there? I only remember two or three going through the campaign.

I love these spots but I only found like 3 during the whole campaign.

I only recall finding a few through the campaign, wish I had found more as they are really cool. Just like the Vistas Guild Wars 2 added in to their game, a nice little break from killing shit, although, they added some form of completion award into finding them which I don’t believe Diablo does. Perhaps if they weaved them in to the overall Renown system people would look for them more?