Uranus is an oddball planet — it spins on its side, tilted about 98 degrees so that its rotational axis is almost parallel to the plane of its orbit. This means that for about a quarter of its 84-year-long orbit, one pole gets all of the sunlight (summer), and the other is plunged into darkness (winter). Uranus is approaching its northern summer solstice, which will happen in 2028.
In this image, we can see the bright white northern polar cap and bright storms at lower latitudes.