Stone Town, Zanzibar historic quarter, bears the marks of Tanzania's rich and eventful history. Its religious treasures include both churches and mosques. From Saint Joseph's Cathedral to the wa Balnara and Aga Khan mosques, they're fascinating and free to visit.
If you're interested in history, climb up to the Arab Fort. Built by Omani Arabs in the 1700s to defend the city from the Portuguese, it provides panoramic views over the ocean. Elsewhere, on the site of the city's former slave market, five stone statues bound together by chains commemorate those that passed through here.
Much of Stone Town's multicultural ambiance can also be appreciated just by strolling through its narrow alleys and browsing its markets. At sundown, make your way to the night market at Forodhani Gardens or head to the waterfront for dinner.