Due to open on 30 November, the London Lights exhibition at the NLA's home in Store Street is still seeking projects that showcase 'innovative and striking' approaches to architectural lighting in London.
A spokesman said: 'Prompted by the fact that NLA's next door neighbour [design consultancy] Imagination has created landmark festive decorations each Christmas, this exhibition will look at the lighting of buildings and spaces in London both permanent and temporary.
'It will show how environments can be enhanced by lighting, which can also improve our appreciation of architecture and our understanding of the city.'
Projects should be submitted for consideration by emailing images and a brief description to: firstname.lastname@example.org no later than 28 October 2005.
Suitable schemes can also be sent by post to: Sharon Huston, New London Architecture, The Building Centre, 26 Store Street, London WC1.
The London Lights show will run until 7 January next year.