The Seletar Reservoir is within Singapore’s Central Catchment Area and was built in 1920, the third reservoir that was constructed. The reservoir was expanded in 1940 and again in the late 1960s to meet the increasing demands of the growing population of Singapore. The second expansion project cost $27 million and increased the reservoir’s capacity by fourfold, making the Seletar Reservoir the biggest reservoir in Singapore at that point in time. It was also at this time that the lookout tower featured in the postcard was built. The reservoir was subsequently renamed the Upper Seletar Reservoir in 1992. By then, it also included a park for public use, a golf course, fishing spots, jogging tracks and a children’s playground. The reservoir remains a popular recreational spot amongst Singaporeans today.