The main donator to finance the construction was the family of the Baron Simon Sinas, Ambassador of Greece in Vienna, Berlin and Munich. In 1887, the architect Hernest Ziller, acting as proxy of Sinas' heirs, delivered the building complete to the then Prime Minister Charilaos Trikoupis.

From time to time, preservation and restoration works take place. The facets, the statues and other decorating elements were cleaned in 1980 and the wooden roofs were restored between 1990 and 1992.

By a ministerial decree of 1952, the building, together with eleven other most distinguished edifices of Athens, was identified as preserved monument "in need of special protection" according to the relevant 1950 Law.