This guidebook is a comprehensive resource for outdoor bouldering in the Attica region of Greece, with most sectors located within an hour’s drive from Athens. It draws from over 15 years of exploration, route cleaning, and establishing safe landing spots, reflecting the authors' commitment to the development of the area. In addition to detailed route descriptions and topos, the book offers maps, location information, and historical context to enrich the climber’s experience. Our goal is to inspire both local and international climbers, contributing to the sport’s growth and motivating younger generations to explore bouldering off the beaten path.