Zanzibar's history was influenced by the British, Persians, Arabs, Indians, Portuguese and the African mainland. Stone Town is a place of winding lanes, circular towers, carved wooden doors, raised terraces and beautiful mosques. Important architectural features are the Livingstone house, the Guliani Bridge, and the House of Wonders, a palace constructed by Sultan Barghash in 1883. The town of Kidichi features the Hamamni Persian Baths, built by immigrants from Shiraz, Iran during the reign of Sultan Barghash bin Said. Zanzibar is the leading world clove producer. It also exports spices. Spice Tours are a Zanzibar specialty, offering a look at small farms in the rural areas that grow cloves, vanilla, nutmeg, and other spices, medicinal and ornamental plants, and fruits unique to the islands. There are sandy, palm-fringed beaches near the coast, they give you the feeling you landed on paradise. The unspoiled marine environment offers world class scuba diving and deep-sea fishing. Snorkelling, sailboat charts, visits to historic Prison Island with its giant land tortoises, and dhow races are also popular.The musician Farrokh Bulsara (a.k.a Freddie Mercury) of Queen was born in Zanzibar in 1946. There is also a restaurant named 'Mercurys' on the beachfront of Stone Town.