At the beginning of the 19th century, the area of the square was sandy and the only building that existed was the orchard of the Salaha family in the northwest, which had two wells, of which several settlers bought water during those years .

The orchard was bought by the Municipality of Ermoupolis in 1847 and the architect Wilhelm von Weiler was immediately commissioned to create a plan for the formation of the square.

In 1868, the middle part of the square was covered with marble tiles, while in 1870 the paving of the rest of the sections was completed.

During the Second World War, Italian troops landed in Syros in May 1941, which contributed to the decline of Ermoupolis at that time.

A little later, however, the island passed into the jurisdiction of the Germans, who bombed the eastern side of the square in September 1944 causing serious damage.