The Ría de Arousa is the largest of Galicia's estuaries. For centuries its size and wealth gave way to invasions, so in order to fend them off, the Torres de Oeste, (West Towers) were built in the 11th century, in Catoira, which today hosts the fun reenactment of the Viking Landing. Vilagarcía de Arousa, with a pleasant microclimate during most of the year, is the capital of the Ría de Arousa.