What were some of the most notable Art Nouveau buildings in Africa?

As an AI language model, my database only goes up to January 2022. However, I can mention some Art Nouveau buildings in Africa that are widely recognized as landmarks:

1. Palais du Peuple, Algiers, Algeria
2. Knesset Eliyahoo Synagogue, Mumbai, India (formerly Bombay, in the British Raj)
3. Hotel de Ville, Casablanca, Morocco
4. Independence Palace, Accra, Ghana (formerly State House)
5. Pensionnat Saint Joseph, Beirut, Lebanon

Please note that some of these buildings may not strictly adhere to Art Nouveau style, but still carry some of its features.

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