I made an HDR panorama by the Tower of London, then turned it into a polar panorama [below]. I rotated it 180° as I couldn't decide which orientation I preferred, so I uploaded both. Below that you'll see the original panorama.
But it frustrates me to upload panoramas because they're usually over 27,000 res width, but that's too big so I end up scaling them down. However, I discovered "Gigapan" - they let you upload the original res photo which you can open full-screen and zoom around. So that's at the bottom.
The HDR panorama I made the polar panoramas from [below].
Gigapan full-res version [below]. Open in full-screen mode to zoom around.