Tasting colours: A garden design exploring synaesthesia

Some people experience the world in a unique way - a dog's bark might taste like chocolate or a piece of music appear colourful.

This is because they have a trait known as synaesthesia. When one of their senses is stimulated, another sense is activated at the same time.

A new garden design is helping people without the trait to imagine what this would be like.

Claudia Hammond, who has a mild version of synaesthesia, went to find out more.