Arratzu

Arratzu is a municipality located in the province of Biscay, in the Basque Country, Spain. It is situated on the Urdaibai estuary, a UNESCO Biosphere Reserve. Arratzu is part of the Busturialdea comarca (district).

The name "Arratzu" is believed to derive from Basque, though its exact etymology is debated. Some theories connect it to the word "arratz," potentially relating to stone or rock formations.

The municipality is characterized by its rural landscape and proximity to the Urdaibai marshes. Historically, agriculture and fishing have been important economic activities. Today, tourism also plays a significant role.

Arratzu is known for its traditional Basque architecture and cultural heritage. The local church and surrounding buildings are often central to the community. The municipality also participates in Basque cultural traditions, including festivals and dances.