It is located in the historic centre of the city with the chapel attached to the Esposende Town Hall building. It was founded around 1650, but ancient references seem to indicate that the original temple of Mercy is older. Inside the church is the Chapel of Señor Dos Mareantes, which was listed as a property of public interest in 1977. The origin of the chapel is linked to the donation of an image of Christ at the end of the 16th century.