Dark London Skyscrapers is a stage in The King of Stories representing the Professor Layton universe. It is a similar stage to London, only it is darker, with more ruins, enemies and is slightly more difficult. Professor Layton, Matthew and Yoshi are playable in this stage.
Dark London Skyscrapers never actually appeared in any game in the series, though London did. The stage is dark, having a cloudy, dark sky due to the arrival of Bowser's fleet, and has many ruins of buildngs, due to the attack of the fleet. It also features many enemies to beat and many paths to take. The stage mostly takes place on top of many buildings, often trying to ascend to the tallest one to get to Bowser's fleet. Some buildings will also get bombarded while gameplay, which can fall on the player and instantly KO' them.