Deep learning models, with their complex structures and massive number of parameters, benefit significantly from visualization techniques that help elucidate their inner workings and decision-making processes. These visualizations can improve model interpretability, debug training issues, and optimize model performance by highlighting essential components and potentially redundant layers. The article explores various visualization methods applicable to different stages of the model lifecycle, including model architecture diagrams, activation heatmaps, feature visualizations, and loss landscapes, among others. It emphasizes the importance of these techniques for deep learning researchers, data scientists, ML engineers, and educators to gain insights into model behavior, diagnose training problems, and enhance model understanding. Practical examples and tools such as PyTorchViz and TorchCam are discussed to assist practitioners in implementing these visualization strategies, ultimately aiding in the refinement and development of more robust deep learning models.