A Grade II*-listed 19th Century flour mill could be turned into a Victorian-themed attraction.
The nearby Bluestone resorts has submitted plans to restore Blackpool Mill in Martletwy, Pembrokeshire.
A public consultation was launched on Monday on the proposal, which includes a milling experience, Victorian tea room and narrow gauge steam railway.
Bluestone said, if approved, it could create 60 jobs and open in spring 2018.
The disused five-storey mill is in a Site of Scientific Interest (SSSI) and a Special Area of Conservation (SAC) and was operational until World War Two.