To the north of Ronda, off the A374, is the relatively undisturbed Roman site of Acinipo at Ronda la Vieja, with its partially reconstructed theatre. Although completely ruinous, with the exception of the theatre, it is a wonderfully wild site with fantastic views of the surrounding countryside. You can happily while away a few hours wandering through the fallen stones, trying to guess the location of various baths and forums.
