While studying Law, Giannakopoulos also completed a degree in Fine Art at the School of Fine Arts in Athens, under tutors S. Vikato and O. Argyro. From 1947 to 1955, after receiving a scholarship from the French Government, he continued his studies in Paris at the École du Louvre and the School of Fine Arts (École des Beaux-Arts). His artistic career can be classified into three phases: the influence of German and French Impressionism, the post-impressionistic trends and finally, Fauvism.
Giannakopoulos received a Painting Oscar (Monte Carlo, 1949) and was presented the Gold Medal of Paris (1951) by the Commander of the French Government, among other achievements. He was the co-founder of the Kalamata Gallery, established in 1961.
Constantinos Giannakopoulos, Vase with Flowers, ca 1950, Oil on canvas, 41 x 31 cm