The lively Caudan Waterfront in Port Louis features the Blue Penny Museum, which is primarily devoted to Mauritian art and history, but whose place of pride is given to two of the rarest stamps in the world: the Mauritian 1847 'Post Office' Penny Red and Twopence Blue, estimated to be worth more than US$1 million apiece. Mauritius was the fifth country in the world to begin issuing postage stamps, back in 1847, and some of the few remaining early island stamps are now highly valued around the world. The museum is run by the Mauritius Commercial Bank, which formed a consortium of local companies to purchase the stamps at an auction in Switzerland in 1993, and bring them home for posterity.

Address: Caudan Waterfront, Port Louis

Telephone: +230 210 8176

Opening times: Monday to Saturday 10am-5pm.