Stretching north and south of the square is the town's most elegant shopping street and main axis, Via Roma.
Via Roma is filled with high-end clothing boutiques, chic cafes, and fragrant perfumeries. 
mnli hypothesis: Via Roma is filled with high-end clothing boutiques, chic cafes, and fragrant perfumeries.  premise: Stretching north and south of the square is the town's most elegant shopping street and main axis, Via Roma.