The Xrobb l-Għaġin Nature Park and Sustainable Development Centre was opened by Prime Minister Lawrence Gonzi and Resources Minister George Pullicino yesterday. The park has 15,000 newly-planted trees and an eco-efficient building. This weekend the park will be open to the public between 10 a.m. and 4 p.m. A bus shuttle service will be available from Tas-Silġ.