Aardvarks tend to get really crappy habitats. They're fairly large animals who love to dig, and really require larger habitats with at least some natural substrate. In most cases, I tend to see them in very small enclosures, sometimes mixed with birds or Meerkats, with only a small sand layer, if anything, to dig in.
The main outlier here is of course Detroit's fantastic habitat for them:
Jun. 2018 - African Grasslands - Massive Aardvark Exhibit - ZooChat
In my opinion, this species really needs to be kept similarly to Giant Anteaters.
~Thylo