A new cover for London's pocket Tube map features a special date in the capital's history - 9 January, 1863.
12 colours for 12 lines on the new Tube map cover
The design shows the words of the date of the last day in London without the famous underground network.
London Underground (LU) began services the following day - 10 January, 1863 - between Paddington and Farringdon.
Platform for Art, LU's art programme, commissioned Liam Gillick to produce the latest cover, in 12 different colours to symbolise the 12 LU lines.
Each year, LU distributes 15m copies of the map to passengers.
Artist Liam Gillick was shortlisted in 2002 for the Turner prize in recognition of his solo exhibition The Wood Way at the Whitechapel Art Gallery and for his outdoor installation Annlee You Proposes at Tate Britain.
In 2003, he received a joint commission from Platform for Art and Frieze Art Fair to create a set of posters that were displayed at Great Portland Street Tube station. These had strong single colours and text in simple typography.
Previous pocket Tube map covers have been designed by famous artists such as Yinka Shonibare, Emma Kay and David Shrigley.