Aristotelous Square (Greek: Πλατεία Αριστοτέλους, IPA: [plaˈtia aristoˈtelus], Aristotle Square) is the main city square of Thessaloniki, Greece and is located on Nikis avenue (on the city's waterfront), in the city center. It was designed by French architect Ernest Hébrard in 1918, but most of the square was built in the 1950s.