Tourism in Singapore is a major industry and contributor to the Singaporean economy, attracting 16,402,593 international tourists in 2016, over thrice of Singapore's total population. It is also environmentally friendly, and maintains natural and heritage conservation programs. Along with this, it also has one of the world's lowest crime rates. As English is the dominant one of its four official languages, it is generally easier for tourists to understand when speaking to the local population of the country, for example, when shopping. Transport in Singapore exhaustively covers most, if not all public venues in Singapore, which increases convenience for tourists. This includes the well-known Mass Rapid Transit (MRT) system.
The Travel and Tourism Competitiveness Report 2015 ranks Singapore 11th out of 141 countries overall, which was the second best in Asia only behind Japan (ranked 9th). The report ranks Singapore's business environment, international openness, also travel and tourism policy and enabling conditions as the best in the world (ranked 1st). However, the island nation scored rather low in natural and cultural resources sub-index (ranked 40th).
The Orchard Road district, which is dominated by multi-storey shopping centres and hotels, can be considered the center of tourism in Singapore. Other popular tourist attractions include the Singapore Zoo, River Safari and Night Safari, which allows people to explore Asian, African and American habitats at night without any visible barriers between guests and the wild animals. The Singapore Zoo has embraced the 'open zoo' concept whereby animals are kept in enclosures, separated from visitors by hidden dry or wet moats, instead of caging the animals, while the River Safari, features 10 different ecosystems around the world, including the River Nile, Yangtze River, Mississippi, Amazon as well as the Tundra and has 300 species of animals, including numerous endangered species.