Riverside Limited will continue to run the cafes at the Sound and Cregneash for the next five years.
As well as running the Manx National Heritage cafes, Riverside also operates Aqua Café at the NSC and the Bradda Glen Restaurant.
Managing Director of Riverside, Adrian Christian, says both cafes are unique and they plan to help both tourists and locals appreciate their beauty.
The announcement comes in advance of Manx National Heritage visitor attractions opening for the summer season from April 1 2022.
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