Church of San Xulián da Toxa Monument · O Grove, Salnés, Pontevedra Image of O Grove, not of the place itself. A small church on the island of A Toxa entirely faced on the outside with scallop shells, a covering unique in Galicia that was placed to protect the fabric from the sea damp. Photo: Luis Miguel Bugallo Sánchez (Lmbuga) (CC BY-SA 3.0) What to see and do in O Grove