This summer's "BB Takeover" twist will feature a surprise guest each week who will appear on the show to announce a new twist into the game. Expecting the unexpected will be taken to new heights as Houseguests attempt to stay in the game amid the ever-changing twists that shake up life inside the house on a weekly basis. This season, the Big Brother Houseguests will live in a modern steel beach house that's the largest yet, with the addition of the "Sky Bridge," which adds 155 square feet of living space. Featuring a floor comprised of 12 clear plexi-glass panels, the bridge is not for the faint of heart, with its clear view to the first floor below. Also, Houseguests will enjoy the towering 22-foot-tall steel Wave Wall made of custom curved steel, wood and Plexiglas in the living room, which required the ceiling to be raised from 12 to 24 feet. Julie Chen hosts.