Lys Kernow, known as New County Hall between 1966 and 2009, is a municipal facility at Treyew Road in Truro, Cornwall.

[5] The new building was designed by the County Architect, Francis Kenneth Hicklin, and his successor, Alan Groves, in the Brutalist style[6] and was officially opened by Queen Elizabeth II on 14 July 1966.

[2] Internally, the principal room was the council chamber which was on the first floor and was cantilevered out of the main building on the east side.

[11] This was followed by an extensive programme of refurbishment works, to a design by Poynton Bradbury Wynter Cole of St Ives, which was completed in 2013.

[12][13] The building contains an extensive collection of modern art including a painting by the Cornish fisherman and artist, Alfred Wallis, depicting the harbour entrance at Penzance.