Teampall Bheanáin measures just 3.22 metres long and 2.13 metres wide, a scale that makes it less a church in any conventional sense and more a stone cabinet for prayer, barely large enough for a handful of people to stand inside. What it lacks in size it compensates for in precision: the walls survive well, the steeply pitched gables remain largely intact, and the narrow trabeate doorway in the north gable, meaning a doorway topped with a flat stone lintel rather than an arch, is still clearly legible after more than a thousand years.

The oratory formed part of the monastery associated with St Enda, one of the most significant early Christian foundations in the west of Ireland, and the whole complex on this ridge carries traces of that monastic organisation. A round-headed window survives in the east side-wall, and to the east of the building runs a length of revetting wall that may once have formed part of an enclosure around the church, a common feature of early Irish ecclesiastical sites where a defined boundary separated sacred ground from the world outside. Three clochans, the dry-stone beehive huts used by early monks as individual cells, are associated with the oratory, as are three inscribed slabs. The clustering of these elements points to a site that was more than a simple chapel; it was the working kernel of a small monastic community. Scholarly attention to the site, including work by Manning published in 1985, has also corrected an earlier misattribution, establishing that one inscribed cross-slab recorded here actually belongs elsewhere.

The oratory sits on the ridge to the south-west of Cill Éinne and is a prominent feature from a distance, the steeply pitched gables visible against the sky before any detail of the building resolves itself. The associated clochans and slabs are scattered nearby, and the possible enclosure wall to the east is worth looking for once you have the main building in view.