Stone Town was recently declared a World Heritage Site by UNESCO.
The castle-like Arab Fort is the oldest structure in Stone Town.
It was built on the ruins of a Portuguese church, between 1698 and 170,
by the Busaidi group of Omani Arabs.
Today, it houses the Zanzibar Cultural Centre with an art gallery and open-air theatre.
Next to it, you can see the House of Wonders, the four-storey Stone Town's tallest building, topped by a large clock tower.
It was built in 1883 as a ceremonial palace for Sultan Barghash
and was the first in Zanzibar to have electric light and an electric lift.
Not surprisingly, when it was built, the local people called it Beit el Ajaib,
meaning the House of Wonders.
Now it houses the Zanzibar National Museum of History and Culture
with exhibitions on the dhow culture of the Indian Ocean,
Swahili civilisation and the Zanzibar struggle for independence.