Stephen Fry introduces a celebration of Britain's great gay buildings. The Reverend Richard Coles tells the story of Heaven nightclub in London. Mary Portas pickss Shibden Hall, Yorkshire, where she learns about the revealing diaries of owner Anne Lister. Craig Revel-Horwood picks the Royal Vauxhall Tavern, home of Britain's drag scene. Simon Callow picks the Old Bailey, which has hosted thousands of gay men hve stood trial, including Oscar Wilde. Rikki Beadle-Blair picks the Theatre Royal, Haymarket, a favorite of Sir John Gielgud. Liz Carr picks Bletchley Park for its association with Alan Turing. Lord Alli picks the Houses of Parliament.