- Swordsmith – Wojciech Sławiński
- Legio XIIII from Lublin re-enactment group
- TERRA OPERTA Foundation
- CELTICA Association
- FORUM TRAIANI
- ANTIQUITAS – Officina Artis Cretariae
- EXARC - European network of archaeological open air museums
- VAEE - Vereniging voor Archeologische Experimenten en Educatie
- RomanArmy.com
- Official forum of RomanArmy.com
- Tollund Man
- WEKLICE – the cemetery of the Wielbark culture
- Experimental Centre in Lejre
- The Ministry of Culture and National Heritage
- The Świętokrzyskie Voivodeship Office in Kielce
- The Marshal of Świętokrzyskie Voivodeship Office in Kielce
- The Academy of Mining and Metallurgy-Cracow
- The Institute of Archaeology at the Jagiellonian University – Cracow
- The Nature and Technology Museum in Starachowice
- The Archaeological Museum in Biskupin
- The Archaeological Museum in Poznań