The debates on archaeological heritage research, preservation and management have increased in recent years due to the impact of European standards such as Council of Europe Conventions and the European Union (EU) integration process (for example Coles and Olivier, 2001; Fairclough and Rippon, 2002; Pickard, 2002; Cleere, 2005; Willems and van den Dries, 2007; Kristiansen, 2008; Bloemers et al., 2010; Council of Europe, 2011). The Valletta Convention (the revised European Convention on the Protection of Archaeological Heritage, 1992), the International Council of Monuments and Sites (ICOMOS) Charter for the Protection and Management of the Archaeological Heritage (1990) and The Valletta Principles for the Safeguarding and Management of Historic Cities, Towns and Urban Areas (2011) are playing important roles in this process of archaeological heritage preservation activities. The consolidated version of the Lisbon Treaty also makes cultural heritage an issue for the EU member states; ‘… It shall respect its rich cultural and linguistic diversity, and shall ensure that Europe’s cultural heritage is safeguarded and enhanced’ (Article 3.3), and there is also the Council Directive 93/7/EEC on the return of cultural objects unlawfully removed from the territory of a Member State.