For modern maps, Streetmap provides a larger map on the screen and for exact locations an arrow pointing
to them. Multimap tends to give a little more detail on street names, and it has aerial maps. Zoom in on the
location, and click the camera icon. If you move the mouse over the picture it shows the names of the streets.
Old-maps gives a much better idea of the historical layout.
Magic is another modern map (England/Wales only) showing geographical information for environmental schemes. It contains highly
detailed maps showing individual buildings.