If you like live theater productions, experience a play at Theater de Veste. Check online for prices and times.
You'll have no end of sightseeing choices in Delft. Theater de Veste is an ideal place to kick off here, but there are lots of other worthwhile places to consider. Peace Palace, Binnenhof, and Noordeinde Palace are not far from the arts and culture attraction and and will cap off your day nicely.