Built on top of the hill, the castle is surrounded by a mighty city wall, articulated by circular bastions and crossed by a main road leading to the square where the church of San Giovanni Battista stands. The church has Gothic features and is decorated inside with a series of fifth-century frescoes.
Through the San Giovanni gate you enter a neighbourhood with more recent origins, called Santa Maria because it was built around the sixteenth-century Collegiate of Santa Maria Assunta. This second urban centre is characterized by the presence of noble renaissance buildings of some architectural significance.
The pristine natural surroundings of the Nera River Park offers visitors a permanent educational workshop thanks to the many guided activities on offer, with hiking trails of different levels of difficulty.
Arrone boasts highly developed sports tourism, thanks to the water sports ( canoeing, rafting, and canyoning) and free-climbing on natural rock walls.