Dukes Palace is a historically important building that has long played a part in government operations. Visit to gain a better understanding of the region's political past.
You'll have no end of sightseeing choices when visiting Trogir Old Town. Duke's Palace is a good place to start here, but there are lots of other worthwhile sights to explore. Kamerlengo Fortress, Trogir Main Square, and Trogir Marina are near the historic government building and will top off your day nicely.