St. Nicholas’ Collegiate Church

St. Nicholas is the largest medieval parish church in Ireland in continuous use as a place of worship at the heart of Galway’s life. The early sections of the church date from 1320, although tradition tells us that St. Nicholas was built upon the ruins of an older structure, and part of the chancel’s south wall may incorporate some of this earlier material. it’s said that Christopher Columbus prayed here in 1477 before sailing away on one of his attempts to reach the New World. A tour through the Church will allow you to glimpse the part of its rich history. The church is open all day, every day, and visitors are most welcome. Beyond the church gates, the busy Saturday market provides a good opportunity to explore a myriad of colourful and aromatic stalls where you’ll find a unique gift or souvenir to remember your visit to Galway.
galwaytourism.ie/st-nicholas-collegiate-church

Along with the Hall of the Red Earl, this is the place to visit to learn about the city's history. Explanations of the different parts and stories of the church are available in different languages at the checkout. In 2023 entry cost €5, but for me it was definitely worth it and the money goes towards maintaining the church building.

Founded in 1320 and dedicated to St. Nicholas (patron saint of sailors), it is the oldest working church in Ireland.