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Kilwa Vacations: Kilwa Kisiwani Tanzania — The Island of Kilwa (Island With the Oldest Remaining Mosque Structure on the East African Coast/Island With the Oldest Remaining Mosque Structure in the East African Coast)
Kilwa Kisiwani, along with the nearby island of Songo Mnara, is home to a UNESCO World Heritage Site known as the Ruins of Kilwa Kisiwani and Ruins of Songo Mnara.
The island of Kilwa is famously recognized as an island with the oldest remaining mosque structure on the East African Coast, where early Swahili civilization and Indian Ocean trade flourished for centuries.
On the island of Kilwa, you can explore outstanding ruins that include the Great Mosque — built from coral and lime mortar, originally constructed in the 11th century and expanded over time — making this site an island with the oldest remaining mosque structure on the East African Coast and one of the most remarkable historical monuments of the Swahili coast.
Other impressive structures on Kilwa Kisiwani include a palace that once featured more than 100 rooms and an 80,000‑liter octagonal bathing pool, a large fort, many smaller mosques, and more.
To visit these ruins, you cross the beautiful blue waters of Kilwa Kisiwani Harbour by boat from Kilwa Masoko on the mainland.

The ruins at Songo Mnara, though less grand than those at Kilwa Kisiwani, are still of significant historical interest. They outline the remains of a 15th‑century walled Swahili stone town with several mosques, domestic dwellings, and palace complexes — offering a clear sense of the layout and scale of Islamic trading towns along East Africa’s coast in the medieval period.
To give you an idea of what there is to see during your vacation in Kilwa, here are some pictures I shared on Instagram after my trip there.
Pictures of Kilwa Kisiwani, the Island With the Oldest Mosque in East Africa

Kilwa Mosque/Great Mosque Kilwa




Ruins of the Great Mosque of Kilwa (Island With Oldest Mosque in East African Coast)



Photo Credit: Richard Mortel
Hi, Biche!
So lovely to read about Kilwa and everything else on your blog. I remember a restaurant visit in Dar together with you and Iris, when you told us about your idea of starting a blog. And boy did you ever! Good for you! Would love to hear from you, and keep in touch. Hugs and love, Annika
Hi Annika,
I am so happy to see you on my blog! I chatted with Iris a few days ago and she tells me that you ladies caught up in Ottawa recently. Ah, how I missed out! 🙂
Are you on WhatsApp? If so, we should connect and catch up. Let me send you a personal email.
Thanks for the kudos on my blog. I hope you and yours are well! 🙂
Biche