Ireland’s oldest pub dates back to the year 900 CE. When Sean’s Bar was renovated in 1970, they found the walls were made of 10th-century structures. The pub has a record of every owner in its history, including Boy George, and has centuries of photos, artifacts, and memorabilia on display. Guinness World Records has named it the oldest pub in Europe, and it’s most likely the oldest in the world. Source Source 2 Source 3