Beziers itself is unremarkable. The skyline is dominated by a vast cathedral, but don't bother to look inside, it has been smashed about by protestants and revolutionaries.
However, Beziers has an airport and is near amazing historic sites, both Roman and Medieval. If you have a car it is a good place to tour from. Just outside Beziers is an oppidum - the site of habitation from the 5th Century BC.