Muros has one of the most attractive old quarters on the Ría de Muros e Noia — a compact tangle of narrow lanes and granite-pillared arcades running behind the waterfront. The houses are the typical Galician style: grey stone, low ceilings, iron balconies, and an overall quality of having been built to last in a wet climate. They were.
The main street of the old town runs parallel to the waterfront, sheltered under the soportales — covered arcades — that are characteristic of Galician fishing towns from this period. On Saturday mornings a small market sets up here. The church of Santa María do Campo, a 15th-century Gothic building with a carved portal, sits at the upper end of the old quarter and provides an orientation point.