“STEAM Strengthens European Cultural Heritage” is an Erasmus+ KA229 project that combines STEAM and Heritage by means of a European partnership with six high schools from La Sénia (coordinator school from Spain), Porto (Portugal), Thessaloniki (Greece), Zagreb (Croatia), Aradippou (Cyprus) and Lowicz (Poland). This partnership proposes STEAMS, which is a cross-curricular methodology to teach the contents in our schools that include: 1) the scientific-technological-mathematical background of the STEM subjects, 2) the creativity added by Art to expand it to STEAM, 3) the Social Sciences environment provided by the historical heritage and 4) the international scenario of an Erasmus+ project where all these contents are cooperatively studied and the English language is learnt in real situations. The partner schools of the project share common necessities in order to turn their pupils to the real world with transversal methodologies rather than individual subjects.