About 20 minutes by motor boat from Forodhani area lies Changuu, also known as Prison Island. A slight misnomer, as the ruined buildings thereon were never used to house prisoners, as was the original intention of the architects. The island was, however, once used by an Arab slave trader to contain the more feisty and troublesome slaves he had brought from the African mainland. To prevent their escape before shipping them to the Arabian purchasers, or for auctioning in Zanzibars slave market, the slaves were dumped on Changuu, from where they were unlikely to attempt escape.
20 minutes motorboat ride from stonetown
Approximately 4 hours
It ranges around $50