The Great Hall was built along with the rest of Sandfields Comprehensive School in the 1957/1958, opening to pupils in 1958.
The building consisted of a theatre seating 650 across a stepped stalls and balcony along with a small double-height foyer space and adjoining toilets.
Following the closure of the school in 2016 the site was due to be converted into a welsh language school. New-build finance became available to the local authority and the building was demolished along with the rest of the school buildings for a new build, Ysgol Gymraeg Bro Dur which is opened in September 2018.
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