For an unique history lesson, check out the crumbling remains of Torres do Oeste and imagine how it would have looked in its glory days.
If you're spending a while in Catoira, Torres do Oeste is a good place to kick off your exploring. This once-important structure is one of many attractions that'll keep you busy here. Rosalia de Castro House Museum, Compostela Beach, and Praia de Portugalete are also waiting to be explored nearby.