Starting in 1984, a path of quests, successes and realignments of its partners, brought about the creation of TETRAGON in 1999. Since then, the company has been evolving and growing, not only by widening the spectrum of its projects and activities nationwide and internationally, but also by investing in human resources and know-how, in productive and strategic synergies, in modern equipment, facilities and infrastructure.

TETRAGON is a member of the OCTANORM worldwide network(OSPI-OCTANORM SERVICE PARTNER INTERNATIONAL), the European Network of Science Centers and Museums ECSITE. TETRAGON is also certified with quality management systems according to ELOT EN ISO 9001: 2015 and 14001: 2015 standards.


The creators and directors of TETRAGON are the architects Eleni Vretzaki, Giotis Ioannidis and Ilias Papadopoulos. The staff of the company consists of 25 people including architects, museologists – museographers, designers, graphic designers, programmers, historians, archaeologists, decorators, technical and administrative staff, with high scientific training, know-how and experience.

TETRAGON personel are active members of the ICOM-International Council of Museums, and on a regular basis people from the company participate in national and international conferences with presentations and announcements, publications, research groups and competitions.


The Headquarters of TETRAGON are located in Faliro, Thessaloniki.

In addition, the company owns production facilities and warehouses in Sindos, the Industrial Area of ​​Thessaloniki, with complete technical equipment and means of transport.

At Work

The projects we plan, in collaboration with our specialised team and a wide network of experienced collaborators in Greece and abroad, to meet high standards and values.