Spend an afternoon strolling around the nature-filled surroundings of Dyffryn Gardens and Arboretum. Admire the wide array of plants, see if you can spot some birds or simply take off your shoes and enjoy the grass between your toes.
To explore this showcase of plants, make your way to Creigiau. There are plenty of other worthwhile attractions in this area, like Llandaff Cathedral, Castell Coch, and The Royal Mint Experience.