The European Bioregional incorporates roughly 10,000,000 square kilometers (1,000,000,000 hectares / 2,471,000,000 acres) of land, extending from the Arctic Circle to the Mediterranean basin and from the Atlantic margins to the Ural frontier, with approximately 38,000 kilometers of coastline distributed along the Arctic, Atlantic, Baltic, North Sea, and Mediterranean systems (continental land area synthesized from widely cited Britannica and United Nations Statistics Division geographic tables; coastline approximations derived from aggregated national coastal measurements reported across global geographic datasets). Within this spatial framework, the library organizes the continent into major bioregions such as the Nordic tundra and boreal forests, the Atlantic temperate woodlands, the Central European plains, the Alpine and Carpathian mountain complexes, the steppe margins of Eastern Europe, and the Mediterranean biomes characterized by evergreen scrub, seasonal drought cycles, and culturally managed landscapes shaped over millennia. Each of these regions is analyzed in relation to indigenous and ancestral cultural continuities, including Sámi, Basque, Celtic, Slavic, Baltic, and other communities whose histories intertwine with pastoralism, fishing economies, transhumance routes, mountain agriculture, ritual traditions, and complex linguistic heritages. The European Bioregional Library documents the long historical layering of settlement, empire, war, industrialization, and modernization, while also examining contemporary environmental challenges such as biodiversity decline, agricultural intensification, urban expansion, water scarcity, and climate-driven transformations affecting forests, wetlands, and coastal zones. Parallel attention is given to conservation models including national parks, Natura 2000 sites, rewilding initiatives, and community-based landscape stewardship, alongside traditional practices such as hedgerow management, commons governance, and sacred grove preservation. The library further integrates inventories of languages, archives of oral tradition, medicinal plants, artistic repertoires, pilgrimage networks, and architectural forms, presenting Europe not as a single cultural unit but as a mosaic of interdependent bioregions shaped by ecological gradients, historical exchanges, and evolving governance systems. In doing so, the European Bioregional Library becomes both a scientific reference and a cultural memory repository, grounded in geographic synthesis and bioregional scholarship, and informed by authoritative encyclopedic and UN geographic datasets placed in dialogue with environmental history and contemporary sustainability research (continental figures and categorizations synthesized from authoritative encyclopedic sources, UN statistics, and bioregional geographic literature).