Grim London is an interactive guide to the very worst of the city's past

London is a fantastic city, with a long, and fascinating history. While you may be aware of many of the famous people who called the city their home in the distant past, there are thousands more infamous characters whose misdeeds you likely haven’t heard of. People like The Witch of Wapping, The Blackout Killer, and 'Lord Minimus'.

Created in time for Halloween, digital creative agency Impero has put together an interactive horror map of London, chronicling the city’s creepy past. What may appear to be a normal house to a passing tourist, might well have been built on a plague pit, or once been a baby farmer’s residence.

To explore the map, go to Grim London and enter a postcode or borough. You can explore the map for some place name ideas.

Click on any of the golden cross symbols that appear to find out what happened on that spot, or to learn about someone who once lived or worked there. Categories offered include Murder, Haunting, Criminals, Execution, Prostitution, Plague Pit, Oddity, and Medieval London Site.

It's fascinating stuff, and if you wish to find out more, each entry includes a link to its source.