The first set of Olympic Rings, the symbol of the Olympic Games, will be unveiled this week at London’s St Pancras Station, 18 months ahead of the opening of the London Olympics 2012.

The five multicoloured, interlinked, aluminium rings, will be suspended in front of the clock at the end of the platforms at St Pancras. Measuring 70 foot wide and 30 foot high in total, they will remain hanging in the station until the games are over.

More rings will be placed in London’s landmarks such as the London Eye over the course of the year.

St Pancras was selected as the site for the first unveiling for the red, yellow, black, blue and green rings, because as one of London’s it is the station from which many visitors to the Olympic Park will set out on their journey.

The unveiling will take place on Thursday with key figures present including London’s Mayor Boris Johnson and Chairman of the Locog, Lord Coe.