The Moon Castle is one of the most iconic and outstanding historical remains of Rianxo. Located next to the coastline, in the middle of the Arousa estuary, today only the remains of what was once an important fort for surveillance and defence survive.

Temple of great historical and religious value. With a simple and traditional style, it is a place of pilgrimage and devotion, especially during the festivities in honour of the Virgin.

The Pazo de Goiáns is an icon of Boiro. Located next to the mouth of the Coroño River and at the gateway to the Arousa Estuary on the Goiáns estate, which occupies an area of ​​approximately 120,000 square meters, it is protected as a Site of Cultural Interest (BIC).

The Neixón Castro is, without a doubt, one of the most significant fort complexes in the entire Northwest of the Iberian Peninsula, comprised of two settlements located on the Punta Neixón peninsula: the Small Castro and the Large Castro.

The Axeitos Dolmen, located in the parish of Oleiros, is one of the most outstanding megalithic monuments in Galicia. Popularly known as the "Parthenon of Galician Megalithism", this dolmen dates back to the Neolithic period, approximately 4,000-5,000 years ago.

The Chapel of San Alberte de Ribeira is a small religious temple in traditional Galician style. The chapel stands out for its architectural simplicity, with stone walls and a gabled roof, typical of Galician rural buildings.

At almost any time of the year, pilgrims pass by the southern side of this church and the person in charge of guarding and guiding those who wish to visit this distinguished Romanesque monument is also in charge of stamping the credential.