The project which was funded by the OPW, Department of Culture, Heritage and the Gaeltacht and Fáilte Ireland consisted of the refurbishment of the visitor centre with the expansion of a new café / restaurant at one of the world’s most important prehistoric landscapes which encompasses several Natural Heritage Areas. The MEP team designed alterations to the ventilation, heating and cooling and the new lighting in the experience area, emergency lighting, fire alarm and CCTV. The Software tool DIALux was used for natural daylight calculations to maximise daylight to spaces and it was also used for artificial light design to establish lighting levels. The design required that we reuse existing services where possible, a challenge considering the building consisted of a complete concrete shell, thus making the service routes difficult to navigate. Design intention also required services such as ventilation and electrical containment to be exposed.