Black Sabbath
Black Sabbath have sold more than 70 million records worldwide

Black Sabbath have begun the United States leg of their final tour "The End", with future dates confirmed in Australia, New Zealand and at European festivals. It will kick off in Omaha, Nebraska, on Wednesday 20 January.

Upon announcing the conclusion of their near 50-year career, band members Ozzy Osbourne, Tony Iommi and Geezer Butler said in a video announcement "when this tour concludes, it will truly be the end".

Drummer Bill Ward withdrew from the band's 2012 reunion plans due to "unsignable" contract negotiations and is not believed to be involved in this final tour. The band will headline Download festival on 11 June, but there are currently no other UK dates scheduled for the British band.

As Black Sabbath's farewell tour begins, we look at the five weirdest things about the band and their long career.

Black Sabbath
Bill Ward, Tony Iommi, Ozzy Osbourne and Geezer Butler of Black Sabbath appear at a press conference in 2012 Getty