With all these factors in mind, Hospitality Ireland decided to examine the top ten visitor attractions in Dublin, based on Fáilte Ireland's Visitor Attractions Survey 2024. Phoenix Park Visitor Centre (1,741,588)Phoenix Park Visitor Center is the most visited tourist attraction in County Dublin with 1,741,588 visitors as of 2025. Spanning over 700 hectares, Phoenix Park is one of the largest enclosed public parks in any European capital city. Phoenix Park is free to enter and open 24 hours a day, 7 days a week, all year round. National Gallery of Ireland (1,058,259)ADVERTISEMENTThe National Gallery of Ireland features a collection of over 16,000 artwork spanning from around 1300 to the present day.