Check out this 360 degree panorama on a clear day from near the top of El Yunque National Rainforest, Puerto Rico. The day I went up there, there were no clouds and no rain, resulting in a view that apparently is very rare to enjoy. Altogether, I ended up with a 116 megapixel image, stitched together using Autopano Pro.
Click and drag to swivel your view. Shift key zooms in, Alt key zooms out.