Jurong Bird Park:

Jurong Bird Park is Southeast Asia's largest bird park and home to more than 8,000 birds of 600 species from around the world. Highlights include the Southeast Asian hornbills, the South American toucans, and the penguin exhibit.
 

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Jurong Reptile Park:

Also touted as "Crocodile Paradise", the place brings you eerily close up to different species of reptiles in photo shoots, feeding sessions and reptile shows.
 

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Singapore Zoological Gardens:

The open zoo provides a lush tropical garden for the animals.
 

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Night Safari:

The Night Safari, a world first, has won global acclaim for the zoological gardens. If you're planning to do both the zoo and the safari on the same day, hit the zoo in the late afternoon, catch a quick dinner, then hop onto the night safari.

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Underwater World Singapore:

Underwater World, Asia's largest tropical oceanarium, is located on Sentosa Island.
 

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Singapore Botanic Gardens:

The Singapore Botanic Gardens is spread over 52 hectares and is home to more plant species than the whole of North America. It is also an invaluable botanical and horticultural research institute with many exciting developments underway.
 

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