Cardiff was controversially awarded the first test of the series with the traditional venues of Trent Bridge in Nottingham and Old Trafford in Manchester missing out. It will be the first test match staged in Wales.
England's Andrew Strauss, captaining for the first time in an Ashes series, told reporters after his team's warmup match against Warwickshire that his players were "walking into the unknown".
"We are not entirely sure what to expect. Both teams will go there not knowing what to expect and we can only judge when the test match is over," he said. "In world cricket home advantage counts for a huge amount."
The pitch is expected to be slow but offering no obvious advantages to the spinners and designed to last for the full five days.
Australia have a great batsman in captain Ricky Ponting while England possess, in Kevin Pietersen, a player capable of producing match-changing innings.
However, it is the bowling which holds the key in Cardiff and the remaining four tests and both sides will be debating up to Wednesday morning just which combination gives the best prospect of 20 wickets in the match.
Australia's hope received a body blow on Monday when fast bowler Brett Lee was ruled out through injury.
INTEREST HIGH
Lee got the ball to reverse wickedly in the warmup match against the England Lions and was a certainty to return to the side after a successful ankle operation.
He would have formed a hostile pace trio with Mitchell Johnson and Peter Siddle with Stuart Clark and Nathan Hauritz disputing the remaining spot.
Off-spinner Hauritz has held few terrors for English batsmen so far, conceding 180 runs against Sussex for just one wicket.
His chances of playing would have improved with the withdrawal of Lee, although Australia could be tempted to play four pace bowlers, adding Ben Hilfenhaus to the mix and relying on the part-time spin of Marcus North, Michael Clarke and Simon Katich.
England have the option of playing two orthodox slow bowlers in off-spinner Graeme Swann and left-armer Monty Panesar or an extra paceman in Graham Onions.
Although there is nothing like the fever pitch of anticipation that built up before the unforgettable 2005 Ashes series, interest is high in England because both sides look so evenly balanced.
"It's going to be a fierce competition but we're ready for it, we're excited about it and we're going to come out fighting," Pietersen said.
