Orleans House Gallery

Orleans House Gallery sits on the Thames in Twickenham, just a short drive from Chessington. It's a Georgian villa with an octagonal room that's genuinely stunning - all plasterwork and tall windows looking out over the river. The collection jumps about a bit: local history, contemporary exhibitions, prints and drawings from the house's own archive. Some of it lands, some feels a touch thin, but the building itself is worth the visit.

You'll get the most from this if you enjoy Georgian architecture or are into printmaking and drawing. Kids might manage thirty to forty minutes before restlessness sets in, unless there's a specific exhibition on that grabs them. The grounds are pleasant enough for a wander, and the Thames Path runs nearby if you fancy extending the outing into a proper riverside walk.

Admission is free, which removes any sting. Allow an hour, maybe ninety minutes if you're thorough. The real draw is the octagon room - it's properly lovely when the light's right. Worth combining with Walton on Thames Camping and Caravanning Club Site if you're basing yourselves nearby. The site's only four and a bit miles away, making this an easy half-day activity. It's not going to rewrite your week, but as a rainy-afternoon option or a quick cultural break from the camping routine, it does the job.