Our Lady Star of the Sea and St Winefride () is a Roman Catholic church in Amlwch, a town on the island of Anglesey, north Wales. It was built in the 1930s to a design by an Italian architect, Giuseppe Rinvolucri, using reinforced concrete. The church is in the shape of an upturned boat, reflecting Amlwch's maritime heritage, and is dedicated to Our Lady, Star of the Sea (a title of St Mary) and St Winefride, a Welsh saint. The church is a Grade II* listed building, a designation given to "particularly important buildings of more than special interest", because it is a "remarkable inter-war church", built to "a highly unusual and experimental design". The Twentieth Century Society has called it "a rare and unique church", and it has also been called "one of Britain's most avant-garde churches". Location and history The church is on the A5025 road, about to the west of Amlwch, a town on the north coast of Anglesey, Wales. It is dedicated to St Mary (under the title Our Lady, Star of the Sea) and to St Winefride, a 7th-century Welsh noblewoman who is also venerated at St Winefride's Well, Flintshire. Construction of the church began in 1932, when the foundations were excavated. It was completed in 1937, and the church was consecrated in the same year. The architect was Giuseppe Rinvolucri, an Italian engineer from Piedmont, who settled in Conwy, north Wales, because his English wife was suffering from tuberculosis. His specialist field was the design of Roman Catholic churches, and other – more conventional – examples of his work can be found in Abergele and Porthmadog, also in north Wales. The church is part of Caernarfon Deanery within the Diocese of Wrexham. The parish of Amlwch and Benllech also includes the church Our Lady of Lourdes, Benllech. Damage from the weather and deterioration in the concrete meant that the church closed for worship in 2004, requiring worshippers to attend services elsewhere on Anglesey. Demolition was a possibility in 2006. An appeal launched raised the estimated £1.2 million to £1.4 million necessary for repairs, which included replacing the roof coverings, redecorating internally and externally, and repairing the steps. An application for planning permission for the work was submitted in May 2008 to the Isle of Anglesey County Council. An application for a grant of £840,000 from the Heritage Lottery Fund was rejected on 18 March