The Singapore Zoo

The Singapore Zoological Gardens is locally known as the Mandai Zoo.

It occupies 28 hectares of land on the margins of Upper Seletar Reservoir. There are about 315 species of animal in the zoo, 
of which 16% are considered threatened species. The zoo attracts about 1.4 million visitors a year.
http://www.zoo.com.sg

Adventure Cove Waterpark

Promising endless splashes of fun, Adventure Cove Waterpark is an aquatic adventure park with something for everyone. 
Feel the adrenaline rush as you zoom down thrilling waterslides such as Southeast Asia’s first hydro-magnetic coaster.

For a day of wet and wild fun in the sun, come and experience it all at Adventure Cove Waterpark.
http://www.rwsentosa.com

Singapore Botanic Gardens

Singapore Botanic Gardens is a 63.7 hectare botanical garden in Singapore.

It is the only botanic garden in the world that opens from 5 am to 12 midnight every single day of the year, and does not charge an admission fee, except for the National Orchid Garden.
http://www.sbg.org.sg

Night Safari

The world's first wildlife park built for visits at night, the Night Safari is not like any ordinary zoo illuminated by the night or a modern version of nocturnal houses found in many zoos around the globe.

Nestled in 40 hectares of lush secondary forest, the Night Safari offers guests the unique experience of exploring wildlife in a tropical jungle at night.
http://www.nightsafari.com.sg

Jurong Bird Park

The idea of a Bird Park in Jurong was first conceived in 1968 by Dr Goh Keng Swee, the then Minister for Finance. During a World Bank Meeting in Rio de Janeiro, 
Dr Goh visited a zoological garden and was impressed with its free-flight aviary.

He saw that Jurong could be more than just an industrial zone for Singaporeans, it could also be where people relax with nature.
http://www.birdpark.com.sg