Capacity of Dublin's 3Arena (Formerly The O2)

The 3Arena at North Wall Quay, Dublin Docklands, is Ireland’s largest indoor amphitheatre. Its maximum capacity is 13,000 for concerts (standing + seated configurations vary).

Opened in 2008 as The O2, it was rebranded in 2014. The venue hosts international music acts, comedy, family shows, and sporting events.