Missing possible POIs. Missing clear close-up image of signs.
Though may be award plaques.
https://www.mapillary.com/app/?pKey=805943981570213&focus=photo

Missing fountain/pillar, unclear; survey needed

Imagery: Esri Clarity, Esri, Maxar Premium

Check for missing way; survey needed
footway to O'Loughlin Court 10, 11 and 12; and/or
driveway for O'Loughlin Court 13

This substation seens to have been mostly demolished, though some of its elements may remain in place.

Source: Compare Esri Clarity => Esri

There does not seem to be a building here. There may be / have been ruins at one point (Esri Clarity).

Street name "Hillcrest" looks like a housename or name of the building itself.

Missing barrier node, layer tagging or similar
Intersection of footway and barrier

Missing plaque on bench

https://www.mapillary.com/app/?pKey=463656968041388&focus=photo

Missing mural artwork nearby, assuming it is still accessible.
As signed
https://www.mapillary.com/app/?pKey=250072007838331&focus=photo

Use for reference only, articles i.e.
https://www.kilkennypeople.ie/news/callan/889271/mount-carmel-mural-is-helping-to-reconnect-with-the-callan-community.html

"Unknown structure"
"Low-lying concrete and brick structures of unknown use/history. Landscaping of curved, low-lying brick retaining walls with concrete cappings."
"possible old children's push merry-go-round?"

This may be a (disused) leisure=playground and/or amenity=stage