Heavy metal titans Metallica embarked upon their electrifying WorldWired Tour in 2016, coinciding with the release of their 10th studio album Hardwired... To Self-Destruct.

Over a four-year period, Metallica played 143 shows spanning four continents. Over four million metalheads were treated to performances of songs from the band's latest album, as well as crowd-pleasing hits like Master of Puppets and For Whom the Bell Tolls.

However, the Australian leg was cancelled due to frontman James Hetfield's struggles with addiction, while the South American leg was postponed until 2022 due to the COVID-19 pandemic.

Despite these setbacks, the tour still grossed $433 million, the equivalent of $582 million today. This looks likely to be surpassed by the band's current M72 World Tour.

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