London is a ghost of all the things that were once there, and The Lost London Tube Map shows off some of the most famous forgotten landmarks. Biscuit Town and Bedlam are long gone, but others (like Vauxhall Pleasure Gardens) are still around to be rediscovered.
Some losses are definitely for the best. Few would welcome back the public horror of Tyburn gallows, or the miserable Marshalsea Prison. Other losses are a cause of some regret: Euston Arch and the Astoria, for example. Imagine a city where Whitehall Palace still stands, and Old London Bridge yet straddles the Thames. Of course, we're barely scratching the surface. We've not included the Overground or DLR, and have limited the scope to (roughly) zone 1. A whole heap of buildings such as Watkin's Folly and the White City Olympic stadium are left out, and we don't have room to include all the important stuff lost from central London.