Houses have been evacuated and people urged to avoid the area as more than 100 firefighters tackle a large town centre blaze.
Gwent Police and 14 fire crews were called to the scene on Frogmore Street, Abergavenny, Monmouthshire, at about 20:35 GMT on Sunday.
The Magic Cottage charity shop and other nearby buildings have been destroyed and a building remained alight on Monday morning, but no injuries have been reported.
A number of nearby residents were evacuated, with Abergavenny Leisure Centre opened up to accommodate those affected and some still unable to return to their homes.
