So we come to the money shot: London from above. The Viscount could fly up to 25,000 feet, but as you can see from most these photos, we were nowhere up that far. I don't know what our altitude was, but it was probably higher than it seemed to me (it only felt like a few hundred feet). We definitely climbed much higher in London's airspace, though. I think that's the former NatWest Tower (now called Tower 42 or something) near Liverpool Street towering above the rest, and that's one of the tallest buildings in London, after Canary Wharf and that gherkin.