Just a forty minute ferry ride from Hong Kong Island, Cheung Chau is an ideal destination for day trips. The small island has gained a surge in popularity among Chinese tourists, thanks to a popular Cantonese TV series based on Cheung Po Tsai, a notorious pirate in the 19th century. His loot is said to have been buried at a cave on the southwestern tip of the island. If treasure hunting is not your forte, you'll still find a wealth of sights to see, like the Pak Tai Temple, which dates back to 1783. Don't miss out on sampling the variety of street snacks on the island, from supersized fishballs to fresh mango mochi.