After the erection of the mansion in 1897 and the construction of Herod Atticus Road, the area which surrounded the Crown Prince's Palace was fashioned into a large ornamental garden. The planning of this appears to have been assigned to Ziller's technical office. The selection of suitable plants, though, must have been entrusted to a Greek specialist, since most of the trees are native to Greece.

From the very beginning the garden was divided into two large sections because of the slope of the land. The building is situated in the upper section.

The design of the garden in front of the building was similar to that of other neo-classical structures of the period (the Academy, the University and the National Library). The garden follows a relatively rigid geometric plan of the French type, with symmetrical beds of grass and seasonal flowering plants. The formalism of the composition approaching Herod Atticus Road is alleviated by the perennial plane trees, lindens, palms and cypress trees.

A wide marble staircase leads to the larger part to the garden, which is on the lower level. The symmetry has been preserved here also with the main point of reference being a long path with high cypress trees which leads to a swimming pool and a pavillion. To the right and the left of the path are lawns, stepped terraces, flower beds and areas with trees and bushes. Around the entire garden high trees are planted next to the railings, to ensure the necessary privacy from the surrounding roads.

In general the botanic composition of the garden is quite rich, since it includes about one hundred and forty species and varieties of ornamental trees, bushes, climbing plants etc. Some of these plants are rare. Many of the trees in the garden, such as the cypress trees are more than a hundred years old.

From its initial design at the end of the nineteenth century up until the early 1970's the palace garden was preserved without significant change. Since 1974 the garden has undergone several changes. The most important of these is the addition of a wide marble staircase which facilitates access to the lower part of the garden.

The President holds a reception on the 24th of July every year. This is to commemorate the restoration of democracy in 1974 and the political, military and academic leadership of the country, as well as representatives of the Press, of all sectors of the economy and many Bodies and Organizations are invited.