A 45-degree isometric top view of a massive Cylinder-shaped world/ designed with an epic/ breathtaking scale. The top surface features towering/ snow-capped mountains/ sprawling futuristic cities/ ancient castles/ dense enchanted forests/ and vast oceans with waterfalls cascading over the cube’s edges. The bottom reveals intricate layers of rock/ glowing magma rivers/ underground civilizations/ and deep mysterious caves. The scene is incredibly detailed/ with a grand fantasy and sci-fi aesthetic/ dramatic lighting/ and a sense of vastness and adventure.