Andrew Carnegie expressed the wish that the Peace Palace would stand detached from its surrounding environs and be enclosed by a garden. His wish played a part in the decision to build the Peace Palace on parts of the old Zorgvliet park, away from the city center. A competition was also held for the design of the garden and it was won by the British garden architect Thomas Mawson, who was famous for his designs in which garden and building form a unity. For the Peace Palace he also chose to create a gradual transition between garden and palace, with spacious terraces inviting people to admire the gardens. These terraces were laid out in brick, the same material that was used for the palace itself. Mawson expressed the peace thought in his choice of botanical elements: sharp thorns were avoided, and only trees and shrubs with small leaves were selected, in order to allow as much light as possible to fall into the garden. For the big pond a natural water course from the dunes was adapted. Water, just like peace, is one of the first conditions of life. The roses in the abundant rosarium symbolize love. Because the ancient trees of Zorgvliet shield the garden from the busy city, it is an oasis of peace and quiet.