1. Kent Ridge Park, May 2015. As insultingly expensive as a week in Singapore can potentially be, visitors often overlook the fact that many of the city’s highlights are completely free! As with the stunning Singapore Botanical Gardens, you’d be a fool to leave town without hiking The Southern Ridges, a nine-kilometer trail connecting a number of gorgeous parks along the city’s southern ridge. The route starts here in the pretty Kent Ridge Park, with moody views out over Singapore Port.