Well worth a visit. Parhelia Parhelia are also known as sundogs. They are patches of light on the main 22 degree halo around the sun that are particularly bright. They are formed by light from the sun being refracted through hexagonal prism-shaped ice crystals, before reaching the eye of the observer. Note that refraction has separated the colours slightly, with the red end of the spectrum being closer to the sun.
Parhelia usually occur in pairs, one on each side of the halo, each at the same altitude as the sun.
These can only form if the sun is at a sufficiently low altitude, and hence these are more common in winter. Personally, I've seen a lot of these, on average I'd say I see them about once a month, more common even than rainbows. Arcs You do get a huge variety of different possible arc displays in the sky, and I have here pictures of two of these. On the left is a picture of a circumzenithal arc, and below right there is a picture of a circumhoriztonal arc. These look like brightly coloured pieces of rainbow, except that of course the arc is the wrong way up, and placed directly above the sun.