CSS background images can be enhanced with gradients to create stunning visual effects. By using the `background` property, you can combine an image with a gradient overlay, allowing for unique designs. For example, `background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('image.jpg');` seamlessly blends these two elements, providing depth and style.
