A fish palace sounds grand, even palatial, but the reality on the northern shore of Crookhaven is a roofless, overgrown rectangle of walls slowly being reclaimed by vegetation. The grandeur was always industrial rather than architectural: this was a place where fish were gutted, pressed, and salted on a commercial scale, and the term "palace" was common period slang for such curing facilities, borrowed perhaps ironically from the scale of the operation rather than any elegance of construction.

The complex dates to the 17th century and is associated with Sir William Hull, who operated here during a period when the waters off the west Cork coast were extraordinarily productive, particularly for pilchards. The site consists of a rectangular enclosure measuring roughly 26 metres east to west and 18 metres north to south. On the southern side sits a roofless single-storey structure with a double-sided central fireplace, the kind of feature that would have served the rendering and processing work central to a curing operation. More telling are the three small rectangular perforations still visible in the western wall, sitting about 1.48 metres above ground level. These openings, each roughly 14 centimetres high and 23 centimetres wide, once held the press beams used to squeeze oil from the fish, a crucial step in producing both the preserved flesh and the valuable pilchard oil sold across Catholic Europe as a cooking fat and lamp fuel. A smaller raised sub-rectangular enclosure on the northern side, its central dividing wall now collapsed, served the same purpose. The detail comes from a study by Went published in 1946, which remains one of the few careful examinations of these largely forgotten Cork fish palaces.

The perforations in the stonework are small enough to overlook if you are not specifically looking for them, but they are the most legible surviving clue to how the machinery of this place actually worked. The enclosure is overgrown, and the structures are roofless, so what the site rewards is close attention to the walls themselves rather than any sense of interior space.