Set on a landscaped rock outcrop to the north-west of Bishopstown House in County Cork, the structure is roofless and open to the sky, its crenellated parapet rising just 2.3 metres. It is modest in scale, barely 4.55 metres across internally, with a curved porch added to the south entrance and a single window looking north. But press closer and the walls give something away: the plaster that once lined the interior was studded with shells pressed into its surface. The shells themselves are long gone, but their imprints remain, a ghostly negative record of what was clearly a carefully decorated space. The floor is quartz pebble, and a ledge running around the base of the walls is formed from glassy slag, a vitrified industrial by-product repurposed here as an ornamental material. Someone wanted this place to feel particular.

The belvedere, a term for a garden building designed to command a view or provide a place of contemplative retreat, was built for Dr. Peter Browne, who served as Bishop of Cork and Ross from 1710 to 1735. Browne had it constructed as a personal retreat within the broader Bishopstown demesne, the managed estate surrounding Bishopstown House. The combination of a fireplace in the west wall and a decorative niche in the east wall suggests it was intended for actual use in all weathers, not merely as an eye-catcher to be admired from a distance. The shell-encrusted interior places it within a wider eighteenth-century fashion for grotto-like spaces, where natural and semi-natural materials, shells, minerals, rough stonework, were used to evoke a mood somewhere between wildness and refinement. The tower is recorded on the 1842 Ordnance Survey six-inch map, by which point it was already a generation old and the demesne well established around it.