Sentosa Island

Singapore's resort island sits just offshore, a short ride from the city by cable car, monorail or even a boardwalk stroll. Sentosa crams an improbable amount onto its few square kilometres: Universal Studios Singapore, the giant Singapore Oceanarium, Adventure Cove waterpark, ziplines and luge tracks, plus three swimming beaches strung with bars. History buffs can tour Fort Siloso's WWII guns, while families happily lose a whole day to the rides. It's a paid-attraction playground rather than a single sight — pick a few highlights and hop between them on the free internal shuttles.