Euro 2016: Cardiff fan zone moves to Principality Stadium
The Principality Stadium will host Cardiff's fan zone for Wales' Euro 2016 semi-final match against Portugal on Wednesday.
A 100ft (30m) screen is being installed alongside the venue's existing two big screens.
Tickets for 20,000 fans will be available from 10:00 BST on Tuesday.
Until now, the fan zone was situated in Cooper's Field and had a capacity of 6,000 people.
Cardiff councillor Peter Bradbury said: "It will give thousands more a chance to see our boys make history."
There will also be fan zones in Singleton Park, Swansea, Colwyn Bay, Rhyl, Denbighshire, Aberystwyth, Anglesey, Newport, Pontypridd and Wrexham.