Caisleán an Fhorgais or Castle Fergus is a large square
tower in good preservation. It lies north- west of Six Mile Bridge about
eight miles and though called Castle Fergus, it is two miles up from
that river.
From 
Letters
on the Antiquities of County Clare, 1835 by Eugene O’Curry
Search the online
photographic collection for images of Castlefergus
On 1842 Ordnance Survey Map (using GenMaps)
On Bing maps satellite view (using GenMaps)
On Bing maps satellite view with OS Map overlay showing all monuments and enclosures (using GenMaps)
