The historic centre of Gravina occupies a narrow ridge between the ravine to the west and the more recent town to the east. The streets are tight, the stone is golden, and many of the buildings date from the 15th–18th centuries when the town was under the rule of the Orsini family. Several baroque palaces survive in good condition, and the network of stairways and alleys that connects the different levels of the quarter rewards unhurried exploration.
The best approach is simply to walk. Start at the cathedral and work downward toward the ravine, following whichever alley looks most promising. The quarter is small enough that you won't get seriously lost, and the dead ends usually resolve into views of the gorge below.