Boiro is a municipality located in Galicia, Spain on the northwest coast along the Arousa estuary. It has a population of around 18,844 people spread across 8 parishes and 115 villages. Places of interest include watermills, historic manor houses, and hiking trails with views of the coast and estuary. The town has a long history dating back to Bronze Age rock art and Celtic hillforts. Local industry includes mussel farming, fishing, and factories. Boiro offers tourism attractions like beaches, as well as cultural and sporting events throughout the year.