Abruzzi N Park
People usually go to Brindisi to catch the ferry going to Greece or Albania. At least that used to be almost the only reason to go to the place. However Brindisi is now becoming known also as a city worthy of having visitors from everywhere.
If you have an interrail pass you should get a ticket (for the ferry to Greece) for free. But beware of scams and of the fact that during the off season the ferries don’t leave that frequently.
The city is full of attractions, and if you're still there only to catch a boat, these attractions might just keep you there after your ride has gone. See the Roman columns and the churches, and discover little corners and niches of simple charm. Brindisi's harbour is beautiful, and goes around the whole town. There are many historical memories like Frederick's Swabian castle or the Araganese castle at the harbour entrance, or the column at the end of the Appian way or the place where Virgil passed away, or the well where crusaders watered their horses, or the unique Romanesque church of Maria Casale, not to mention the historic town centre with its cathedral and museums.
Apart from this Brindisi is girted by interesting towns like San Vito de Normanni and Carovigno with their own rich history.