Aviary

An aviary in Buckinghamshire that's open round the clock and costs absolutely nothing to visit - that's the sort of thing you don't come across every day. This free-access bird collection sits within easy reach of Watford and makes for a surprisingly good stop if you're camping or caravanning at one of the nearby parks like Bushey Hall Park or Wyatts Covert.

What you're getting here is a chance to see a variety of birds in what's clearly a hands-on sort of setup. The 24/7 access is genuinely unusual for this type of attraction, which means you could theoretically wander through at dawn or dusk when the birds are most active - and that's actually when they're worth watching. Early morning visits tend to be quieter and the birds more vocal.

It works best for families with younger kids who want a quick break from caravan life without shelling out entrance fees. If you're an ornithologist or serious birdwatcher, you'll probably want something more extensive, but as a bit of light entertainment between park activities, it does the job. Allow about an hour, maybe ninety minutes if the kids are keen.

The location near Watford means it fits neatly into a broader exploration of the area - you could combine it with a visit to one of the larger country parks like Aldenham, which offer proper walking and picnic space. On a grey afternoon when everyone's restless, this zero-cost option beats sitting in the caravan.