This dataset contains the microdata file and the technical documentation of the UNTWIST survey. The survey was conducted between 21 October 2024 and 9 January 2025 in six European countries: Denmark, Germany, Hungary, Switzerland, and the UK. The technical documentation includes the fieldwork description, the variable harmonization and weighting report, the annotated description of the appended country-variables, and the unified codebook. The dataset consists of the following files: DATASET* Appended_Main+Boost_wgt_pooled.csv TECHNICAL SHEET * Technical Sheet.pdfThis document provides a summary of the survey technical information and highlight the key aspects of the fieldwork, which are relevant to understand how the collection of data has been out in practice. WEIGHTING APPENDIX * Weighting Appendix.pdfThis appendix expands the description of the weighing procedure, that was followed to ensure the maximum quality of representativeness of the target population. HARMONIZATION APPENDIX * Harmonization Appendix.pdfThis document describes in detail the harmonization procedure of the country specific categories of two variables: the education level and religious belonging. CODEBOOK * UNTWIST Survey Codebook.pdfThis document presents the unified dataset codebook of both individual and country-level variables. COUNTRY-VARIABLE DATA APPENDIX * Country-Variable Data Appendix.pdfThis document provides further details of the appended country-level variables, such as concepts, measurement scales, codes and sources.