Stitched photo of Choi Hung Rainbow Estate in Hong Kong aka Rainbow Building (Kowloon). Original resolution after cropping it in the Lightroom is a bit more than 165 megapixels, photos were taken with Canon 5D Mark IV and Sigma 50 1.4 Art lens. I stiched around 30 photos. The most difficult part was to fix spherical distortion to get straight vertical and horisontal lines. Here's a screenshot of the photo before straightening and cropping https://imgur.com/rC7nLkB