 In 1990s these statues shaped the park outline, but as more and more modern sculpture was added and as the young trees grew up, they became a less obvious minority.In the late 1980s, at the height of Perestroika, CHA began holding lavish exhibitions by artists such as Francis Bacon, Giorgio Morandi, Jannis Kounellis, Robert Rauschenberg, and James Rosenquist.Sculptures by Western modernists appeared in the adjacent park.