This beautiful Arts and Crafts style, Grade II-listed building is the symbolic core of the Wisley landscape. As the home of RHS Science for over a century, the Old Laboratory was instrumental in Wisley’s mission to conduct practical scientific research into ornamental horticulture, and to provide training for student gardeners. That role has been taken over by RHS Hilltop: The Home of Gardening Science. So the Old Laboratory has been renovated and welcomes visitors to share its stories. Free with your garden admission.