Located in the Kallithea area, the Dimitsana Gymnasium is a commanding two-storey stone building constructed with locally hewn masonry. Its completion in 1930 followed designs by N. Mitsakis, an architect of the Ministry of Education, and the school operated without interruption from the academic year 1930–31 until its recent closure, when students were transferred to the Vytina Gymnasium–Lyceum.
- Facilities: 6 classrooms; headmaster’s and teachers’ offices; wide corridors; a 200-seat amphitheater; dedicated physics and chemistry labs; and an external, continuous covered gym with equipment.
- Funding: The main construction was financed by 4,300,000 drachmas from the Nikolaos Makris–Leonardos Bequest (founded with his major donation to Dimitsana in 1851). The remaining 700,000 drachmas were provided by the Greek Government (then under Prime Minister Georgios Papandreou), which also helped equip the labs, furniture and teaching aids.
- Commemorations: At the main entrance stand the busts of Nikolaos Makris (great benefactor of Dimitsana) and Dimitrios Pol. Papoulias, professor of Civil Law at the University of Athens and administrator of the Makris Bequest at the time of construction.
Regarded as one of the most modern school buildings of its era, it still compares favorably with the best educational facilities today.