Have a play with TfL’s property assets map

Ever wondered what land and assets the GLA and TfL own or lease in London? Well, there’s a map on their website.
Prepare to lose several hours of fascinated scrolling.
Property Asset Register Public Web Map (c) TfL/Arcgis
It shows the tube tunnels where TfL owns the stratum below ground, it shows the tube stations, in places in some considerable detail, such as the WW2 shelters under Tottenham Court Road and Camden. Odd little spurs off the tube tunnels tend to be ventilation shafts.
It&rs