It's for International Kawasaki Disease Awareness Day
The Tower of Refuge and Ramsey Swing Bridge will light up red today, Monday 26 January, for International Kawasaki Disease Awareness Day.
It's the leading cause of acquired heart disease in UK children.
Around 1,500 children are admitted to UK hospitals with the illness each year, and a quarter may suffer lifelong heart damage.
The lighting up today has been organised by local families who hope everyone will learn the signs and help spread the word.
You can find out more about it here.
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