[1][2] It has a small urban centre called Illa da Toxa, belonging to the civil parish of San Martín, which had 42 inhabitants in 2018.

[5] For centuries, the island was used by the inhabitants of O Grove as a place to graze their cattle (which they transported by boat) and also for their agricultural work.

[6] But following the rediscovery in the 19th century of its thermal mud (from which it takes the name A Toxa) and medicinal waters (from which it takes the name Louxo), it became privately owned to exploit its thermal advantages, building the old spa, which brought with it a spectacular increase in tourism and the birth of other facilities.

[7] In 1989, the island hosted the annual meeting of the Bilderberg influence group, which brings together the political and financial elites of the wider world.

The island has a characteristic chapel dedicated to Saint Caralampio[12] and the Virgin of Carmen, whose original plan dates back to the 12th century and which is now completely covered with scallops.