CN Koi - based at Claremont Garden Centre, Bryants Lane, Maldon Road, Woodham Mortimer. CM9 6TB

You'll find CN Koi tucked away at Claremont Garden Centre just outside Woodham Mortimer, a proper specialist setup for anyone serious about koi or simply curious about keeping these magnificent fish. The aquarium showcases various koi varieties - from the common goldfish-coloured specimens to the more prized patterned breeds - in well-maintained tanks that let you study their size and colouring up close. It's educational without being heavy-handed: you can spend twenty minutes or two hours depending on your interest level.

This is really for the pond and aquarium enthusiast rather than casual visitors. If you're thinking about adding koi to a garden setup, this place answers questions. Kids might find it engaging for a bit, though they'll probably get itchy feet after half an hour unless they're genuinely into fish. The garden centre itself means you can browse plants and supplies while you're there - practical if you're planning an actual pond project.

Based near Maldon, it slots nicely into a wider exploration of the area. Hoe Mill Lock and The Courts Campsite are both under twenty minutes away, making it a decent addition to a park holiday if wet weather strikes or you fancy something low-key. Check ahead on opening hours and admission costs before you drive over - details aren't widely advertised. On a bright day it's worth the detour if fish interest you; on a grey afternoon it feels a touch too specialist unless you're genuinely planning a pond.