Parliament.
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An old theatre, constructed in 1822 with 600 places. There are theatre performances in French and Creole English as well as jazz and classical music performances. To know about upcoming shows, check posters, read the newspapers or ask at the tourist information.
Founded in 1880 with an exhibit on the extinct dodo, a library with more than 50000 volumes, and a lot of objects showing the history art and culture of the island. It was separated from the now-defunct Desjardins Museum museum founded in 1842 and as such the oldest museum in Mauritius and oldest in all Africa.
Rue du Vieux Conseil
One of the few car-free streets (more of an alley) of the city. Here you can admire the architecture of old Port Louis with less noise and traffic.
City hall.
With travellers' texts ranging from Marco Polo, Duarte Barbosa to Ahmad bin Majid, as devised by poet and semiologist Khal Torabully, a travel writer born in Port-Louis.
Locals come to this square to sit down and take a break. It's surrounded by colonial French buildings, but also some high-rises. There are statues of important figures in the island nation's history like Queen Victoria, Sir Seewoosagur Ramgoolam, first prime minister of the island, Sir Veerasamy Ringadoo, first president of the island and Emmanuel Anquetil, second president of the Mauritius Labor Party. It's quite busy during daytime, also because of the traffic on adjacent streets but it's peaceful in the evening which therefore is the best time to visit.