I've pointed to mega-pixel images before but this site has 4,000 megapixel (i.e., 4 gigapixels) images. This translates to 88,000 X 44,000 pixels.
For those of you wondering who makes a digital camera with that kind of resolution, think again. They actually use a view camera with 9-inch by 18-inch film, then scan the film to digitize the image.
In looking at the images, the thing that strikes me is not the resolution, but the smoothness of the objects. It creates in some of the images an almost 3-D effect. No observable jaggies, banding, or other pixel noise is seen. This creates a smooth panorama that is next to being there.
Below is an image of the camera with the photographer next to it for scale.
Aloha!