Wetland - which largely means mangrove swamps. Well laid out walkways take you through a variety of natural habitats. The wildlife, especially the birds, is stunning. Gives two or three hours of peace in the Singapore experience.
On the north-west coast of Singapore.
www.sbwr.org.sg
Like everywhere on the island, it is easy to get to by public transport: the website explains all you need to know.
(Of course, even taking a taxi is not particularly expensive - at least not be European standards.)
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