To preserve his Irish manor, he staged concerts on its grounds, drawing the likes of U2, Bruce Springsteen, Bob Dylan, Madonna, 50 Cent and the Rolling Stones as well as tens of thousands of fans.
Henry Mount Charles holds tickets for the “Eminem and 50 Cent European Tour” in 2005. To generate funds for the upkeep of Slane Castle, he turned its grounds into an amphitheater.