Long exposures at night with moving clouds can make stitching 360 panoramas difficult. The 6 panos in this virtual tour of an abandoned cement plant were shot some time ago. Over the last 6 months I've finally developed a reasonably efficient post-processing technique to get the clouds to stitch smoothly. Enjoy the panos!
Update 7/27/2015: This tour has been reprocessed and is now displayed in the krpano viewer.