The view from Gwaenysgor Hill, as explained in a previous tip, is - and has been - the premier thing I've shown visitors.
Fondest memory: Ignore the title of this tip, this is just the best place to put my thoughts.
Prestatyn is a decent town. Not great, but a lot better than most British towns of a similar size. It warrants a visit, if not a long stay as a tourist. If you're touring North Wales, by all means give Prestatyn a look. The beach is nice, there are some good scenic spots, nice pubs, a couple of decent restaurants and nice walking options. The town and environs look pretty on a sunny day. It's safe and in a convenient location with decent transport links.
However, there's not enough here to spend more than a couple of days seeing. You could, however, base yourself here and use your base to explore other parts of North Wales or North West England. From Prestatyn, you're never far away from the likes of Snowdonia, Anglesea, Chester, Manchester and Liverpool. There are plenty of sightseeing options around and about, such as castles, cathedrals, beaches, rivers and mountains. You can even take a (long) day trip to Ireland.
All in all, worth a look but not a full-blown holiday destination in its own right, rather part of a bigger whole.
Sitting on the hillside overlooking Prestatyn, the sea and the Vale of Clwyd - one is like a angel sat upon a cloud, surveying the beauty of Wales.
See this BBC website for a panoramic view - the best bit is at the end when it points east towards Prestatyn - really beautiful.
The view is from the summit of National Trust land - "Craig Fawr".
Prestatyn Hillside is the start of the National Offa's Dyke Long Distance Footpath, and is designated an Area of Outstanding Natural Beauty - a bit like a National Park.