Project-Based Learning (PBL) is an inquiry-driven approach that engages students in solving real-world problems. Picturebooks, often underestimated as tools for deep learning, offer an accessible and visually engaging medium to introduce complex topics, spark curiosity, and scaffold student inquiry. This article explores the integration of picturebooks into PBL frameworks, highlighting their potential to enhance critical thinking, creativity, and collaboration. It provides a step-by-step guide for educators, case studies of successful implementation, and a discussion of potential challenges and future research directions. By combining the narrative power of picturebooks with the active engagement of PBL, educators can cultivate meaningful, inquiry-driven learning experiences for young learners. Furthermore, this study builds upon previous research by Botev (2024), which explored the effectiveness of picturebooks in content and language integrated learning (CLIL) instruction. The findings demonstrated that picturebooks significantly enhance vocabulary retention, content comprehension, and student motivation in EFL classrooms. By leveraging the interplay between visual and textual elements, picturebooks were shown to support both linguistic proficiency and conceptual understanding across subject areas. Project-Based Learning (PBL) has gained significant attention in recent years as an effective student-centered instructional approach that promotes active learning, collaboration, and real-world problem-solving (Thomas, 2000; Hmelo-Silver, 2004). Unlike traditional direct instruction, PBL immerses students in meaningful projects where they investigate complex questions and create tangible solutions. This pedagogical approach emphasizes student autonomy, encouraging learners to take responsibility for their educational experiences while developing essential 21st-century skills such as critical thinking, creativity, and communication. The hands-on nature of PBL enables students to connect classroom content with practical applications, bridging the gap between theory and experience. Picturebooks, while often associated with early literacy, hold untapped potential as catalysts for deep learning. Research suggests that multimodal storytelling-combining text and visuals-enhances comprehension, engagement, and retention of information (Farindhani & Wangid, 2019). The interplay between visual and textual elements in picturebooks provides a rich context for inquiry, making them valuable resources for facilitating discussion, fostering empathy, and promoting cultural awareness. When integrated into PBL, picturebooks serve as inquiry starters, sparking students' curiosity and leading them toward research, discussion, and hands-on projects that connect classroom learning to the real world. The accessibility of picturebooks allows students across different linguistic backgrounds and learning abilities to engage with complex topics in meaningful ways. Botev (2024) illustrates how picturebooks serve as critical tools in content and language integrated learning (CLIL) instruction, providing empirical insights into their