Night of Heritage Light illuminates UNESCO World Heritage Sites in UK and Ireland

On the evening of October 1st, The Night of Heritage Light will illuminate several UNESCO World Heritage Sites within the UK and Ireland, in acknowledgement of the UNESCO International Year of Light and Light-based Technologies 2015 (IYL 2015). With this event, the Society of Light and Lighting will celebrate the skills of its members and promote UNESCO World Heritage Sites.


The Society's members will be illuminating between ten and twelve UNESCO World Heritage Sites, creating a "light-map" across the United Kingdom & Ireland and bringing history to light!

Sites that have been confirmed include:

Design teams will be working with conservation teams at each of the sites, giving them the rare opportunity to showcase historical and cultural significance. The sites will either be lit for the first time or the existing lighting will be supplemented, ensuring that the lighting schemes are appropriate for each unique site. The idea is for each lighting installation to be completed for sunset and photographed. The photographs will then be displayed following the event.

For more information please visit or email

About Society of Light and Lighting (SLL)

The SLL represents the interests of all those interested in the application of light. It is open to everyone with an interest in lighting.

Although the SLL was launched in 1999, the Society builds on 100 years of history. Its origins go back to the formation, in 1909, of the Illuminating Engineering Society, which had the aim of considering all applications of natural and artificial light. The SLL is recognised worldwide as an authority on lighting and its applications.

The Society is part of the Chartered Institution of Building Services Engineers and offers the strength of a chartered professional institution with the freedom to serve the world of light and lighting without being restricted solely to engineering.

About IYL 2015

The International Year of Light and Light-Based Technologies (IYL 2015) is a global initiative adopted by the United Nations (A/RES/68/221) to raise awareness of how optical technologies promote sustainable development and provide solutions to worldwide challenges in energy, education, agriculture, communications and health.  With UNESCO as lead agency, IYL 2015 programs will promote improved public and political understanding of the central role of light in the modern world while also celebrating noteworthy anniversaries in 2015—from the first studies of optics 1,000 years ago to discoveries in optical communications that power the Internet today.  The IYL Global Secretariat is located at the Abdus Salam International Centre of Theoretical Physics (ICTP).

The Founding Partners of IYL 2015 are the American Institute of Physics (AIP), the American Physical Society (APS), the Deutsche Physikalische Gesellschaft (DPG), the European Physical Society (EPS), the Abdus Salam International Centre of Theoretical Physics (ICTP), the IEEE Photonics Society (IPS), the Institute of Physics (IOP), Light: Science and Applications, the International Network, 1001 Inventions, The Optical Society (OSA) and the International Society for Optics and Photonics (SPIE). 

Patron Sponsors include Bosca, the International Association of Lighting Designers (IALD), Royal Philips Lighting, Thorlabs and UL.


Juliet Rennie
SLL Coordinator

John Dudley
Steering Committee Chair
International Year of Light and Light-based Technologies 2015

Joe Niemela
Global Coordinator (IYL Secretariat)
International Year of Light and Light-based Technologies 2015