Bavaria has ordered Christian crosses to be hung at the entrance of all of its regional government buildings, it has emerged.

The German state's government said the crosses should not be seen as religious symbols, but are meant to reflect the southern state's 'cultural identity and Christian-western influence'.

But the move has already drawn a furious reaction from opposition politicians and one prominent cleric accused the regional government of hypocrisy ahead of an election.

Bavaria has ordered Christian crosses to be hung at the entrance of all of its regional government buildings, it has emerged. Markus Soeder, Governor of the German state, is pictured hanging up a cross at the state chancellery in Munich on Tuesday

The arch-conservative Christian Social Union (CSU) party, allied with German Chancellor Angela Merkel's conservatives on the national level, faces a stiff challenge from the far-right Alternative for Germany (AfD) party in the October vote.

Premier Markus Soeder's proposal to display the Christian symbol in all regional government buildings is almost certain to be challenged in court for breaching religious neutrality laws.

But Soeder said the crucifix was being displayed not as a Christian symbol but as a symbol of the identity of Bavaria, Germany's richest and most conservative state.

'We want to give a clear signal that people have a desire to stress their identity,' he said after being photographed affixing an ornate wooden cross, the gift of a former Munich cardinal, to a wall in the premier's office.

German news agency dpa reported that Tuesday's decree won't affect municipal and federal government buildings in Bavaria.

Crosses are already compulsory in public schools and courtrooms in predominantly Catholic Bavaria.

The CSU is facing a rising challenge from the far right after governing Bavaria without interruption for more than 50 years and Soeder is under pressure to show he can preserve the dominance that makes his party a powerful lobbyist for its home state in Merkel's Berlin government.

Bavaria's government said the crosses should not be seen as religious symbols, but are meant to reflect the southern state's 'cultural identity and Christian-western influence'. Pictured: Bavaria's capital, Munich

The south-eastern state was on the frontline of 2015's migrant crisis, when over a million people fleeing war and poverty in the Middle East, Africa and Central Asia arrived in Germany, fueling support for the AfD.

The CSU has distanced itself from Merkel's decision to admit the refugees. Former premier Horst Seehofer, now federal interior minister, made waves on assuming his new office by stating that Islam 'does not belong to Germany.'

But the AfD, which campaigns against Muslim immigration, dismissed the cross proposal as 'the usual gesture politics'.

'The Christian Cross is being turned into an election accessory, while the conservatives refuse to protect our basic values with real actions,' the AfD's co-leader Alice Weidel said in a statement on Wednesday.

Even clerics were critical of the plan. 'Many see as a provocation and a hypocrisy the way you speak about Christianity,' wrote Burkhard Hose, a priest who ministers to the students of Wuerzburg University, in an open letter to Soeder.

'Stop this misuse of Christianity and its symbols as a supposed bulwark against Islam,' he added.