The hook
A spice island in the Indian Ocean where an ancient Swahili trading town of carved doors and winding lanes gives way to turquoise water and white sand, a place of monsoon dhows, cloves, and a heavy history.
01Why it's worth it
Zanzibar was for centuries a hub of the Indian Ocean trade in spices, ivory, and, darkly, enslaved people, and that layered past defines its atmospheric old core, Stone Town: a maze of coral-stone alleys, Omani-Arab and Indian merchant houses with famous ornately-carved wooden doors, bazaars, mosques, and a former slave market that is now a sobering memorial to the trade the island was central to. The island is fragrant with the clove and spice plantations that made it rich, tourable on a "spice tour." Beyond the town, the coasts unfurl into some of the Indian Ocean's loveliest beaches, palm-backed and lapped by warm turquoise water, with reefs, dhow sailing, and, off nearby islands, the chance to snorkel or dive. It pairs perfectly with a mainland safari as the beach-and-culture finale, though it deserves engaging with its history, not just its sand.
02How to experience it
Wander Stone Town's lanes, carved doors, and market, and confront its slave-trade history at the memorial and old market site; a spice-farm tour adds the fragrant side. Then unwind on the beaches (the east and north coasts for the best sand and water), sail a dhow at sunset, and snorkel or dive the reefs. It is the classic post-safari finish.
From the locals
Zanzibar draws a flat "simply amazing" in the r/travel Tanzania thread, but the specifics are more useful than the verdict. On the town: "spend two nights in Stone Town — very interesting ancient city. Really great local food at Lukmaan. Fantastic and cheap spices at the spice market."
On the beaches, the same comment carries its own warning. Nungwi and Kendwa are named for the diving, immediately followed by "however, lots of resorts and fancy hotels" — and then the alternative the writer actually prefers: Paje, "the heart of kite surfing." That split is the honest shape of the island. The north-west coast is developed and knows it; the east coast is where the wind is.