If you have a vision camera simply "scan" one of the cards from this list
http://pinataisland.info/viva/Concept_art_cards the concept art will unlock as will the achievement.
Edit: As Not Nyx mentions, it seems that the achievement doesn't always unlock on the first card scanned (I must have just got lucky). So I suggest you try more than one image if the first doesn't work and as always YMMV
Edit 2: Pending Demise has kindly provided another source for an image as that wiki seems to be losing content over time: