Castle of Santa Cruz da Guarda Monument · A Guarda, Baixo Miño, Pontevedra Image of A Guarda, not of the place itself. A seventeenth-century bastioned fortress built to watch over the mouth of the Miño facing Portugal; it was taken by Portuguese troops in 1665, during the War of Restoration. Photo: StradaleDue (CC BY 2.0) What to see and do in A Guarda