Second in size only to Tokyo's giant Tsukiji fish market, Sydney's is a showcase for the riches of Australia's seas. An easy 10-minute walk from Darling Harbour (and with its own stop on the Metro Light Rail network), the market is a great place to sample sushi, oysters, octopus, spicy Thai and Chinese fish dishes, and fish-and-chips at the waterfront cafés overlooking the fishing fleet. Behind the scenes guided tours, including the auction, begin at 6:40 am and run until 8:30 am on Monday, Thursday, and Friday ($A25). They also offer cooking classes. Call ahead for advance reservations or book on the website.