The original London Dungeon opened in 1974 as an exhibition through dark British history, operating as a free-flow walkthrough attraction. It was expanded in the 1980s and 90s with several historical walkthrough attractions, such as the
Great Fire of London and
Jack The Ripper. By 1997, now owned by Vardon Attractions, the majority of the attraction was redeveloped as a batched series of attractions rather than a free-flow exhibit. This saw the arrival of
Judgment Day, a water dark ride that began with visitors entering a mock trial to be sentenced to death, then boarding a boat through
Traitor's Gate to their execution. The boat ride itself was a masterpiece in design in a crowded space. Many of the original horror tableaux were refurbished as part of a new ransacked village scene, at the start of the ride, and the finale included a lift into the unknown, followed by a turntable and a backwards drop. The original story at the top of the drop was of an executioner with an axe, but this was later changed to a firing squad, that shot, just as guests plunged backwards. 2000 saw the re-introduction of the
Fire of London segment, which simulated the burning streets of 17th-century London and featured a spinning
trommel with smoke effects. Under Merlin Entertainments, increasingly actor-led segments were added during the 2000s, such as the
Labyrinth of the Lost mirror maze and the
Great Plague. In 2004, the
Judgement Day boat ride was altered and renamed to
Traitor - Boat Ride to Hell, removing the original effects and scenes to become a simple boat ride, largely through darkness. 2006 saw the arrival of a
Sweeney Todd segment. The attraction used
surround sound and sensory effects to simulate an encounter with the titular character, before visitors' chairs were suddenly tilted backwards as a shock effect. Another ride segment was added in 2007,
Extremis - Drop Ride to Doom, based on the hangings at
Newgate gallows. Guests were raised 20 feet to meet an animatronic judge, priest and hangman before a free-fall drop into darkness. The new ride replaced the
Blood and Guts Café. The new County Hall Dungeon features some of the attractions repurposed from the Tooley Street Dungeon, not including Bloody Mary and Vengeance 5D. When it departed its first home, many props were sold at a car boot sale in nearby Pimlico. The sale Items on offer included an "array of torture and surgical equipment, severed limbs, false eyeballs, plague doctor's potions & a severed head". The original venue was redeveloped by
Network Rail. ==Related attractions==