On Saturday 13 September, enjoy free entry to Erddig. It’s all part of Cadw Open Doors – Wales’ annual contribution to the European Heritage Days initiative, which invites heritage organisations, private owners, local authorities and others to open their doors or offer activities to the public free of charge on dates during September. Funded and organised by Cadw, the ever-popular festival of Wales’ built heritage will this year, encourage Welsh residents and visitors alike to explore some of the country’s lesser-known and smaller-scale sites – several of which are usually closed to the public.