- - Co-founder of Scientific Society of Sandomierz and its first president (1993-1999);
- - co-founder of Studium Generale Sandomiriense (University of Sandomierz) in
- Sandomierz (1995);
- - member of: Humanistic Section of National Committee for Scientific Research
- (1992 - 2002), Scientific Council of the Museum in Pułtusk, Committee for Pre- and
- Protohistoric Sciences of Polish Academy of Sciences, European Association of
- Archeologists, Society for Archaeological Ceramics (University of Lund), European
- Association of Archaeologists, expert's group of Council of Europe for Protection of
- Town Heritage (1996-1999) and others;
- - president of Interdisciplinary Forum of Medievalists (2003-2005);
- - citizen honoris causa city of Sandomierz (since 2005);
- - member honoris causa of Sandomierz Scientific Society (since 2006);
- - member of the Scientific Association of Polish Archaeologists (since 2008);
- - expert of the National Academic Evaluation Commission (2003-2009);
- - member of the Scientific Council of the Maison de Science de l'Homme (CNRS - University in Tours) (since 2007);
- - president of the Council of the State Archaeological Museum in Warsaw
- (since 2008);
- - member of the Board of Trustees of the National Museum in Warsaw (since 2008);
- - member of the Advisory Council at the National Heritage Board of Poland (since
- 2008).
- corresponding member of the Warsaw Scientific Society (since 2009)
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