The Mirante de Joinville is the panoramic viewpoint above the city, reached by a short steep road up the Morro Boa Vista. From the platform you look out over the whole urban grid, the Atlantic Forest hills, and on a clear day all the way to the Babitonga Bay.
The site has a small park, a chapel, and the inevitable kiosks selling cold drinks and ice cream. Best visited at the end of the day for the sunset.