Kicking serious butt on the big screen, Hollywood's top action stars have pulled in untold millions at the box office, so it stands to reason that their properties would be just as awesome as their top-grossing films. Many boast heart-pumping features like bulletproof windows, state-of-the-art gyms and tricked-out home cinemas, though some are surprisingly restrained. Strap yourself in and click or scroll through to check out the adrenaline-charged mansions of Arnie, Sly, The Rock, Keanu and more...