A new catering offer, educational and retail spaces, and accessible visitor facilities have also been included in the works, including a Changing Places facility.
Mae cynnig arlwyo newydd, mannau addysgol a manwerthu, a chyfleusterau hygyrch i ymwelwyr hefyd wedi’u cynnwys yn y gwaith, gan gynnwys cyfleuster Llefydd Newid.