The town has two beaches (Itzurun and Santiago), which are of interest to geologists because they are situated among the longest set of continuous rock strata in the world. Known locally as the "flysch" they date from the mid-cretaceous period to the present, a time period of over 100 million years. The K-T boundary is present at the Itzurun beach, and fossils can be found, notably of ammonites. The strata stretches along a distance of about 8 km, between the towns/beaches of Deba and Getaria, with Zumaia lying in the middle.

The town is also the home/museum of the painter Ignacio Zuloaga. Exhibits include works by El Greco, Rivera, Zurbarán and Goya. Across the street there is a museum of craft and hand-crafted products of Laia. Within the city centre, the Basque-style Gothic church of San Pedro can be found. It has a temple with a magnificent reredos by Juan de Antxieta, the only work by this Basque sculptor found in Gipuzkoa.

Zumaia is located at the point where the Urola and Narrondo rivers come together. The origins of the town can be traced by its ancient monastery. In the Middle Ages, the people who lived in the Sehatz valley having to endure the continuous attacks of pirates and pillagers, fortified the city. The church today retains the relic of its defensive appearance.

According to the toponym of Zumaia, the theory that the name comes from "zuma" or "zume", a Basque word used to designate to the wicker, plant that apparently was plentiful in the zone, is highly defended. And with regards to Villagrana, there is a theory that states the possibility to be related with "grana", meaning "seeding", that were produced by the abundant groves of evergreen oaks in that period.

Despite of the disagreements in certain aspects with regards to the origins of Zumaia, all historians agree with the fact that the villa emerged surrounding the Monastery of Santa Maria. According to the first preserved parchment in which it is mentioned the place "Zumaya", the Monastery of Santa Maria had been a donation by a privilege of Sancho VI of Navarre to the Roncesvalles´s convent in 1292.

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Wikipedia