Upper Seletar Reservoir

River Wonders, formerly known as River Safari, is a river-themed zoo and aquarium located in Mandai, Singapore, forming part of the Mandai Wildlife Reserve. It is built over 12 hectares (30 acres) and nestled between its two counterparts, the Singapore Zoo and the Night Safari, Singapore. It is the first of its kind in Asia and features freshwater exhibits and a river boat ride as its main highlights. The safari was built at a cost of S$160m, with an expected visitor rate of 820,000 people yearly.The Giant Panda Forest was opened to the public on 29 November 2012, with a soft opening on 3 April 2013, attracting close to 1,500 visitors. This attraction is the fourth zoo in Singapore, along with the Singapore Zoo, Jurong Bird Park, and Night Safari, all of which are managed by Mandai Wildlife Reserve. The park was officially opened on 28 February 2014, and it was announced that more than 1.1 million have visited the River Safari since its soft opening in April 2013.On 13 October 2021, River Safari was renamed to River Wonders.

The Singapore Zoo, formerly known as the Singapore Zoological Gardens or Mandai Zoo, is a 28 hectares (69 acres) zoo located on the margins of Upper Seletar Reservoir within Singapore's heavily forested central catchment area. Opened in 1973, the zoo was built at a cost of $9 million that was granted by the government of Singapore. It is operated by the Mandai Wildlife Reserve, which also manages the neighbouring Night Safari, River Wonders, the Jurong Bird Park as well as the forthcoming Rainforest Wild Park. All five parks makes up the Mandai Wildlife Reserve, which consists of more than 15,000 animals from 1,000 species. Within the zoo, there are about 315 species of animals, of which some 16 percent are considered to be a threatened species. The zoo attracts over 2 million visitors every year.Singapore Zoo has always exhibited animals in naturalistic, 'open' exhibits with hidden barriers, moats, and glass between the animals and visitors. It houses the largest captive colony of orangutans in the world. The Singapore Zoo has been highly ranked by various international metrics.

Mandai Crematorium and Columbarium is a crematorium and columbarium complex located at Mandai Road in Mandai, Singapore. The complex is operated by the Government of Singapore under the National Environment Agency. It is one of two government crematoria in Singapore, the other being the Choa Chu Kang Columbarium. Mandai Crematorium and Columbarium is located not far from Yishun New Town. This complex is one of the final resting places for many Singaporeans because of the new technology and limited spaces to host cemeteries for the dead.

Springleaf MRT station is an underground Mass Rapid Transit (MRT) station on the Thomson–East Coast line (TEL). Situated along Upper Thomson Road, it serves the neighbourhood of Springleaf and the nearby Springleaf Nature Park. The station is operated by SMRT Trains. First announced in August 2012 as part of the Thomson line (TSL), the station was constructed as part of TEL Phase 2 (TEL 2) after plans for the TSL and the Eastern Region line (ERL) were merged. The station was built close to the shophouses along Upper Thomson Road; an earth retaining stabilising structure was installed to minimise ground movement. Along with the TEL 2 stations, Springleaf opened on 28 August 2021 and features an Art-in-Transit artwork Tree of Memories by Koh Hong Teng.

The Night Safari, Singapore is the world's first nocturnal zoo located in Mandai, Singapore. One of the most popular tourist attractions in the country, it forms part of the Mandai Wildlife Reserve along with the River Wonders, Singapore Zoo and Jurong Bird Park. The concept of a nocturnal park in Singapore was suggested in the 1980s by the former executive chairman of the Singapore Zoo, Dr Ong Swee Law. Constructed at a cost of S$63 million, the Night Safari was officially opened on 26 May 1994 and occupies 35 hectares (86 acres) of secondary rainforest adjacent to the Singapore Zoo and Upper Seletar Reservoir. The Night Safari currently houses over 900 animals representing over 100 species, of which 41% are threatened species. The Night Safari is managed by Mandai Wildlife Reserve, and about 1.3 million visitors visit the safari per year. The Night Safari received its 11 millionth visitor on 29 May 2007.

Masjid Ahmad Ibrahim, or Ahmad Ibrahim Mosque is a mosque in Singapore located at Jalan Ulu Seletar off Sembawang Road in front of Springside housing estate.

Mandai Depot (Malay: Depot Mandai; Chinese: 万礼车厂) is an integrated train and bus depot located in Mandai, Singapore. The train depot serves as the maintenance and control centre of the Thomson-East Coast line while the bus depot is used for the Sembawang-Yishun Bus Package.The facility is located on a 32 ha (79 acres) site bounded by Mandai Road, Seletar Expressway and Lorong Lada Hitam, on the former site of Orchidville.The depot is located between Woodlands station and Springleaf station on the Thomson-East Coast Line and has three reception tracks: one track northbound towards Woodlands station and two tracks southbound towards Springleaf station.

Mandai Road (Chinese: 万礼路) is a major road located in Mandai, in the northern area of Singapore. The road starts from Woodlands Road and ends at the junction of Sembawang Road and Upper Thomson Road. The road was built in 1855 in a jungle and appeared in the Franklin and Jackson Plan of Singapore (1828) as a river indicated as "R. Mandi". It has been said the name of the road comes from a tree known as the "Mandai tree". As the road is the main access to the Singapore Zoo and the Night Safari, it is common to refer to the zoos collectively as the "Mandai Zoo". The Mandai Crematorium and Columbarium is also located in the area, and is the resting places for those honourable leaders, such as Lee Kuan Yew, the former and first Prime Minister of Singapore. Mandai Road is one of the heritage road in Singapore.

The Mandai Wildlife Bridge is an ecological bridge in Singapore. It links portions of the Central Catchment Nature Reserve that are otherwise separated by the Mandai Lake Road.The bridge will allow animals, but not people, to cross from one part of the reserve to the other. Prior to the bridge's construction, animals such as mouse deer, civets, shrew-faced squirrels and Sunda pangolins were cut off from others of their own species by Mandai Lake Road. The bridge is intended to allow individuals living on either side of the bridge to breed with each other and increase genetic diversity. According to authorities, roadkill was not the direct reason for constructing the bridge. However, several animals including a Sunda pangolin, a leopard cat, a sambar deer, a wild boar and several Sunda colugos had been found dead on or near the road in the two years prior to the completion of the bridge, and it is hoped that the bridge will reduce such incidents.

Thomson Nature Park is a nature park in Singapore.

Bird Paradise is an upcoming aviary located in Mandai, Singapore. Expected to open in Q2 2023, it will replace the Jurong Bird Park and forms a part of the Mandai Wildlife Reserve, consisting of the Singapore Zoo, Night Safari and River Wonders and the upcoming Rainforest Wild Park.

Thomson Road Grand Prix circuit was a former street circuit at Thomson Road in Singapore. It hosted races from 1961 to 1973 for automobiles under Formula Libre and Australian Formula 2 rules as well as for motorcycles. During the initial years, the main races for motorcycles and cars were 60 laps long. This was eventually refined into two separate races – a preliminary 20 lap event followed by a 40 lap event. The first Singapore Grand Prix of 1961 was won by Ian Barnwell in an Aston Martin DB3S while the first Singapore Grand Prix of post-independence Singapore in 1966, which also ran to Formula Libre rules, saw Singaporean Lee Han Seng win in a Lotus 22. The final victory went to Australian Vern Schuppan in a March 722 in 1973.