Canberra is widely acclaimed as the best landscaped city in the world. Its geometrically circular street pattern, set around key urban planning elements, is complemented by millions of trees and shrubs, which give the city its ambience. Canberra is planned around Lake Burley Griffin and a 'parliamentary triangle' consisting of Parliament House, the High Court and other important public buildings. It extends more than 40km including the satelite towns of Tuggeranong in the south to Gungahlin in the north.