The image below of the night sky shows those things around the pole star which are visible in the night sky over the whole year. This depends on our latitude, which is roughly 55 degrees in Andover UK. Counting out from the centre at 90 degrees each circle reduces by 5 degrees and we see somewhere between 50 and 60 degrees at the bottom we reach the horizon.
So, constellations like Cepheus, Ursa Minor, and Cassiopea are circumpolar. But others like Hercules have large portions which are not circumpolar. Any stars or objects within the 50 degree circle should be visible from our location every night if there is no obstructions, or light pollution. Some of these objects are described below.
Some circumpolar objects that can be observed all year round
Hover over an image to see further details
Image: (c) Terry Tucker AAS