Gorgeous Trogir (called Trau by the Venetians) is set within medieval walls on a tiny island, linked by bridges to both the mainland and to the far larger Čiovo Island. On summer nights everyone gravitates to the wide seaside promenade lined with bars, cafes and yachts, leaving the knotted, mazelike marble streets gleaming mysteriously under old-fashioned streetlights.
The old town has retained many intact and beautiful buildings from its age of glory between the 13th and 15th centuries. In 1997 its profuse collection of Romanesque and Renaissance buildings earned it World Heritage status.
While it's easily reached on a day trip from Split, Trogir also makes a good alternative base to the big city and a relaxing place to spend a few days.