How long does a visit to The London Dungeon take? The London Dungeon is 110 minutes long consisting of 19 interactive shows, 20 live actors and 1000 years of history. Save up to 30% when you book online with our Online Saver ticket! Related articles How many people are on the tour at any one time? What is the minimum age The London Dungeon is recommended for? What are the London Dungeon Opening Hours?