Brooding above the Huddersfield skyline, Castle Hill 's Victoria Tower is usually in darkness at night - but something very special has been going on there this week.
For the Huddersfield landmark was illuminated with a new type of very bright, highly-concentrated lights between 5pm and 11pm last night to the delight of thousands of people across the town.
But don't worry if you missed it - you've got another chance as the tower is lit again on tonight at the same time.
It's part of lighting designer James Bawn's latest project, marking the start of UNESCO’s International Year of Light and Lighting Technologies.
Click below to see pictures from James' Emley Moor Mast display
The Huddersfield event takes place on the same evenings as the international launch in Paris.
James was out on Castle Hill on Sunday night testing his display ahead of the grand debut.
Let There Be Light is a partnership event between Huddersfield-born James, Bolster Moor events company TG Events and Kirklees Council.
Some stunning effects were promised for the two-day project - and James has had to alert the Civil Aviation Authority, so they can warn aircraft pilots of the light beams.
It is recommended that the best viewing positions are at a distance from Castle Hill and not near Victoria Tower itself.
Heading out to see the light display?
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