Agde

Agde is our closest biggish town (with a train station and hypermarket and stuff like that).  It is only about 5km away - a 10 minute bus or car drive, or 30 minutes on bikes with the kids.  It is a town split into three main parts: the historical centre, the incredibly touristy beach area of Cap d'Agde, and the other beach area of Grau d'Agde.  Agde also has a huge naturist village   (we haven't been there, as the kids are the age to be totally and utterly embarrassed).
Yesterday we planned to go to the swimming pool, but after getting the bus into town and then walking quite a long way to the other side of town to get to the pool, we found out it was closed for maintenance, so just spend some time wandering round Agde instead.
We've been to Agde lots of times, but yesterday as we were waiting 50 minutes for a bus home, we admitted that with hindsight, Agde might have been a better place than Marseillan to live, just because of the train station.  I adore Marseillan, but having to get a bus to the train station every time adds another level of complexity (OK, not much, but still a bit) to every journey.  There are also a lot more facilities in Agde, and right in the centre in the winding streets it is still very beautiful.

Classic view of Agde from across the river

The (closed when we wanted to go there) swimming pool with slides

Walking to the pool

Giant flower pots

Finally, just some of the many things you are not allowed to do in the park in Agde (though everyone seems to do them anyway. There were bikes and moped and we even saw some unleashed dogs near a fire (no kidding) though I didn't really feel I could take a photo.....: