Waitrose and construction firm Carter have installed a video screen displaying a computer simulation of the town's new supermarket.
The 3D "walk-through," mounted in the hoarding surrounding the South Street building site, gives residents a glimpse of how the façade will look, as well as a virtual tour of the shop floor, café and various car park levels.
The store, which is currently nothing but a large hole in the ground, is scheduled to open for business at the end of 2014.