 Complete the following phrase:  The pavilions days as an entertainment venue were not entirely over, however. A few months before the theatre closed, a new attraction opened in the basement. The huge basement area originally built as the countrys largest indoor swimming pool back in 1886 but which closed shortly afterwards due to problems with water quality had been home over the years to a small amusement arcade called Tusons and, later, a ghost train ride and vintage car round the world ride. These were all cleared out to make way for the Llandudno Dungeon, a walk through horror waxworks exhibition, featuring scenes from the more gruesome aspects of human history, all built at a cost of over 100,000. Scenes depicted included a full size replica of a Victorian London street, complete with Sweeney Todds barber shop and opium den, the 1665 