In 2017 I took the train to Irun, just south of Hondarribia. I arrived in the afternoon, left my possessions in my room, and crossed the Bidasoa River into France, hoping to get a French dinner. I was too early, so while walking around I saw the church,
Église Sainte-Anne, on 15-25 rue des Aubépines. They were just starting the evening vigil Mass, so I stayed for it, and then asked the priest for a stamp. He took me to his rectory and happily gave me my first stamp on the east side of the Atlantic, as my first stamp was from my parish church back home, before I left. To cross the Bidasoa River, by the way, you take the Santiago Bridge.