I have made these maps in Google My maps that displays sights, museums, places to eat, shops, meeting points, public transportations, police, ER (Emergency Rooms / hospitals) and so on in various cities I have been to. I have added lots of extra places on the map that is not mentioned in this article. it is possible to view this mapn on your computer, tablet or telephone. The maps are spread around in various articles but gathered here for easier reference.
Einar's visual guide to London