Annie Mole's, webmaster of Going Underground, daily web log (blog).
If you like this you'll LURVE One Stop Short of Barking, THE fun and informative BOOK about travelling on the London Underground.
Each map is made from 1,000 Lego bricks and they aim to show how the Tube map has evolved from 1927 through to a first look as to what it could look like by 2020.
The maps, can be seen at Kings Cross St. Pancras (for the 2020 map), South Kensington (1927 map), Piccadilly Circus (1933 - Harry Beck's original map), Green Park (1968 map) and Stratford (2013 map) Tube stations this summer, before moving onto permanent homes at London Transport Museum.
Mike Ashworth, Design and Heritage Manager at London Underground, said: 'LEGO have done a wonderful job of recreating our internationally recognized Tube map.
'I'm sure our customers of all ages and backgrounds will enjoy looking at the five different LEGO maps that show the history and development of the Underground.
'The 2020 map at King's Cross St. Pancras shows the new stations and rail links we want to deliver - we hope this fun LEGO map will inspire the young engineers of the future to help deliver our vision.'
You can pick up a leaflet at the stations where the Lego maps are displayed with details on how to build your own London Underground logo or 'roundel' out of Lego bricks.
"The magic, mystery & sometimes maddening shortcomings of London's Tube are documented with love, enthusiasm & sometimes despair by its unofficial social historian." The Guardian
