Dubrovnik is one of the most beautiful cities I have ever seen. Think Venice, but smaller and cleaner (and with stone streets instead of canals).
Best12bars is absolutely right: walk the old city walls. I did so three times in the weekend I was there.
Also make a point to see the old Jewish quarter and, if possible, the Dubrovnik synagogue: it's the oldest surviving temple in Europe in terms of continual use, even during WWII. There are at least two major cathedrals (from different periods) inside the Old City itself.
It may not be as spectacular as Diocletian's palace in Split, but there is a park about a block outside the north gate that has architectural elements from the Greek, Roman and Islamic periods.
And the main street in the old town has many shops and cafes, sort of like the Piazza San Marco in Venice.
There are also forts on the bluffs overlooking the town, but they were still repairing the damage from the civil war when I was there.
I had too little time there and I hope to take my husband someday just to "hang out".
Dubrovnik is like the crown jewel in a necklace, because the entire Croatian coast is gorgeous. I would only quibble with Best12's characterizing the Adriatic as "blue". To my eye it is aquamarine, and I've never seen a sea or ocean that precise color anywhere else.
Updated On: 3/1/14 at 11:04 PM