The Barclaycard Arena (originally known as the Color Line Arena and formerly known as O2 World Hamburg) is a multipurpose arena in Hamburg, Germany.
The Mercedes-Benz Arena, 26 January 2015 is a multipurpose indoor arena in the Friedrichshain neighborhood of Berlin, Germany, which opened in 2008.
O2 Arena (formerly Sazka Arena, stylised as O2 arena) is a multi-purpose arena, in Prague, Czech Republic.
The O2 Arena (temporarily the sponsor-neutral "North Greenwich Arena", during the 2012 Summer Olympics and 2012 Summer Paralympics) is a multi-purpose indoor arena located in the centre of The O2 entertainment complex on the Greenwich Peninsula in south east London.
The 3Arena (originally The O2) is an indoor amphitheatre located at North Wall Quay in the Dublin Docklands in Dublin, Ireland.