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 half the size of the Royal Botanic Gardens in Kew or around one-fifth the size of Central Park in New York. 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 (1.5 miles).
The Singapore Botanic Gardens is the best free tourist attraction in Singapore. It houses a huge selection of orchids in the Orchids Garden within its compound. If flower is your thing, this is a must! Entrance to the Orchids Garden is not free though but it's worth the price. The last time I was there many years ago was $5 but I'm not sure how much it charges now.