Great Gardens: Singapore Botanic Gardens

The Singapore Botanic Gardens (Chinese: 新加坡植物园; Malay: Taman Botanik Singapura or Kebun Botani Singapura) is a 74-hectare (183-acre) botanical garden in Singapore. It is the only botanic garden in the world that opens from 5 a.m. to 12 midnight every single day of the year, and does not charge an admission fee, except for the National Orchid Garden. The garden is bordered by Holland Road and Napier Road to the south, Cluny Road to the east, Tyersall Avenue and Cluny Park Road to the west and Bukit Timah Road to the North. The linear distance between the northern and southern ends is around 2.5 km (1.6 mi). In December 2012, an application for it to be listed as a UNESCO World Heritage Site was made.

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History and numerous attractions including the important orchid gardens detailed on this link:

en.wikipedia.org/wiki/Singapore_Botanic_Gardens