I mapped the first 9 to 10 chapters of The Amulet of Samarkand by Jonathan Stroud. This is a fantasy novel set in quasi-modern-day London ruled by magicians. The narrator is Bartimaeus, a djinni (a type of spirit) summoned by one of these magicians' apprentices and charged with stealing the titular artifact: the legendary "Amulet of Samarkand".
Bartimaeus claims to be over 4000 years old, and he refers often throughout the book to his adventures in various periods throughout ancient history. I have mapped these long-ago locations he mentions in the first 10 chapters, as well as the places in London he visits on his first night in London after being summoned in the present day.
The locations clustered around London itself are those between which he flees between during the night while carrying the valuable amulet he has been forced to steal by his master.
The really interesting thing about this map for me was that, when I went to try and connect the routes, I found I couldn't see exactly how Bartimaeus traveled. This is because he was going over buildings and "as the crow flies", but always with a fictional or unspecified intermediary place in between mentioned famous landmarks. As such, it isn't possible to plot his route.