During 2017, the authors conducted an evaluation of so-called “veteran trees” in Warsaw — selected specimens with outstanding historical, landscape and natural values, but not taken under legal protection, situated within public space (streets, squares, public facilities) — as part of a pilot program for the Green Board of Warsaw. The following were examined: the condition of trees, the surrounding ground’s condition, spatial conditions. The presented results include an example of two locations — prestigious streets, on which legible systems of street tree plantings from the beginning of the 20th century have been preserved (Piękna Street, J. Ch. Szucha Avenue). The protection of old trees — living witnesses of history and the maintenance of the original spatial form — classic avenue arrangement in both cases are essential for preservation of the historical pre-war scenery of this part of Warsaw.