forced to play on a game show and one of the questions is about the remains of a Torchwood location. In the 42nd century, the Torchwood Archives sent a group of explorers to investigate a mysterious power source that kept a planet in stable orbit around a black hole. By the 2002nd century, the Great Cobalt Pyramid has been built on the ruins of the Torchwood Institute. Parallel universe In "Rise of the Cybermen", a parallel Earth Torchwood Institute is referred to. It is public enough for a survey carried out by it to be reported in a news item, and for someone to be publicly asked about their work there. Prior to "Army of Ghosts", a group led by Pete Tyler (and including Jake Simmonds and Mickey Smith), which worked for the alternate world's People's Republic, took over the parallel Earth Torchwood. The people of this alternate universe discovered what was going on at Torchwood and it became a re-developed organisation run in full view of the public. In "Doomsday", it is revealed that the parallel Earth Torchwood had also been conducting experiments on the spatial breach, which led (between "The Age of Steel" and "Army of Ghosts") to it being infiltrated by the Cybermen, who used the breach to travel to Rose's universe. Following the events of "Doomsday", Rose Tyler, confined to the alternate world, goes on to work for the reformed organisation. From this accelerated parallel universe, Rose's Torchwood becomes aware of "the darkness" causing the stars to go out, mentioned in the episode "Journey's End", and returns in "Turn Left" and "The Stolen Earth" to defend London and find the Doctor in his reality. She is followed shortly by Mickey and Jackie, armed with Torchwood-developed anti-Dalek weaponry, in "Journey's End". Divisions of Torchwood Torchwood One, London Torchwood One was Torchwood's head office and operated out of Torchwood Tower, located within One Canada Square, the tallest of the three Canary Wharf skyscrapers, although it carried out operations across London, including beneath the Thames Barrier, and through front organisations such as "H. C. Clements". To those that have come in contact with Torchwood, they are primarily believed to be a special forces team. The beam which destroyed the Sycorax ship was fired from five different locations around London, suggesting a number of properties are owned by Torchwood One in the area. The tower installations were destroyed during the