D. S. Senanayake College

Westminster House, the official residence in Colombo for the British High Commissioner in Sri Lanka, is situated in Cinnamon Gardens, a suburb of Colombo. In 1948 Ceylon became a dominion within the commonwealth and the British established a high commission that year. The High Commissioner was originally domiciled in a government bungalow, Four Furlongs, on Bauddhaloka Mawatha (formerly Bullers Road) in Cinnamon Gardens. In March 1950 that the Ceylonese government provided a 0.5 ha (1.2 acres) site for the High Commissioner's new residence, on a 99-year lease, on Wijerama Mawatha (formerly MacCarthy Road), in Cinnamon Gardens, however the lease was not formally signed until March 1952.The building, a colonial style bungalow, with large gardens, was designed by the Ministry of Works in New Delhi, for an estimated cost of £40,000. Works on the residence commenced in July 1952 and it was completed in March 1954. Most of the furniture for the ground floor was designed, in a contemporary style, by Dennis Lennon. The residence was named after the Palace of Westminster. The final cost was £53,795, plus £12,000 for furnishings and equipment.The offices of the High Commission occupied a six-storey office building, designed by Charles Kidby of the Ministry of Works, on a 1.6 ha (4.0 acres) site, on Galle Road in Colpetty. Construction of the office building commenced in April 1963, with the laying of a foundation stone by Sir Michael Walker, and opened in January 1966. In the late 1990s the British Government decided that the existing office of the High Commission was no longer fit for purpose and acquired a 0.8 ha (2.0 acres) site on Bauddhaloka Mawatha, from the Meteorological Department, adjacent to Westminster House. In 2001 the Scottish architectural practice, Richard Murphy Associates, in collaboration with local architect, Milroy Perera, was commissioned to design the new offices. The single-storey building has a central spine traversing the middle of the site with four wings leading off it on either side in a staggered arrangement, creating a series of small intimate courtyards, reflecting aspects of traditional Sri Lankan architecture. The building was formally opened in May 2008.On 14 November 2013, King Charles celebrated his 65th birthday at Westminster House, whilst he was attending the 23rd Commonwealth Heads of Government Meeting in Sri Lanka as the Prince of Wales.

Kanatte Cemetery, also known locally as Borella Cemetery, is Colombo's main burial ground and crematorium. It is located at the intersection of Elvitigala Mawatha (Narahenpita Road), Bauddhaloka Mawatha (Bullers Road) and D. S. Senanayake Mawatha (Baseline Road). The 19.3 ha (48 acres) cemetery is owned and operated by the Colombo Municipal Council and contains a Commonwealth War Graves Plot with a number of additional war graves dispersed around the site. The war graves include those of a German soldier, a German merchant seaman, a German interned civilian and an Austrian nursing sister. There are over 60 World War I Commonwealth servicemen and nearly 300 World War II Commonwealth servicemen buried here. The cemetery was established in 1866 and is the main place of burial for all religions and nationalities, with separate sections for Hindus, Buddhists, Shintos, Roman Catholics, Anglicans and non-denominational Christians. The first burial was in May 1866, prior to this most British burials occurred at the Galle Face Burial Grounds, an area near the current Presidential Secretariat building. In the 1920s, those graves were exhumed and the remains were interred at Kanatte.The cemetery's most famous Westerner interred at the cemetery is British-born science fiction writer Sir Arthur C. Clarke (1917–2008).

The British School in Colombo (BSC) is an international school in Borella, a suburb of Colombo, Sri Lanka.

Colombo International School (CIS) is a private co-educational school in Colombo, Sri Lanka. It was founded in 1982 by Elizabeth Moir and employs an English-medium curriculum. In 1998 the school was expanded by the new Chairman of the Board of Directors, Armyne Wirasinha, who created a new branch, Colombo International School Kandy, in Mawilmada. The school provides a British curriculum-based education system which includes the IGCSE Examination for grades 10 and 11 and International Advanced Level for 6th form.

The National Institute of Business Management (Sinhala: ජාතික ව්‍යාපාර කළමනාකරණ ආයතනය, romanized: jātika vyāpāra kaḷamanākaraṇa āyatanaya) also known as NIBM, is a public business school based in Colombo, Sri Lanka.The institute was established in 1968 and offers Graduate, Post Graduate, Executive Education, Diploma and Certificate programmes in the fields of Information Technology, Business Management, Languages, Engineering, and Design. The MBA programme is the flagship programme of the institute and is offered in two year full time. NIBM has collaborated with Coventry University, UK and Limkokwing University, Malaysia in offering degree programmes. The main campus is located in Colombo 07 and the four regional campuses are located in Galle, Kandy, Kurunegala, and Matara. The National Innovation Centre (NIC) that houses programmes in Design, Humanities, and Data Sciences is located in Kirulapone, Colombo.The National Institute of Business Management is headed by V. K. Choksy as Chairman and Dr. D. M. A. Kulasooriya as Director General.

The Cathedral of Christ the Living Saviour is located in Cinnamon Gardens (Colombo 07) a suburb of Colombo, Sri Lanka. It is the primary Anglican cathedral, affiliated to the Church of Ceylon.The decision to build the Anglican cathedral in Colombo, to replace the old cathedral in Mutwal, was initiated by Bishop Harold de Soysa, the first Ceylonese Anglican Bishop of Colombo. It was designed by P. H. Wilson Peiris (architect of the Cathedral of Christ the King, Kurunegala) and the architect of the structure was Tom Neville Wynne-Jones CBE (architect of the Independence Memorial Hall). The construction was undertaken by the firm of U. N. Gunasekera.The foundation stone for the cathedral was laid on 28 October 1968 by Bishop Harold de Soysa. The construction was subsequently overseen by his successor, Bishop Cyril Abeynaike, whose ideas were incorporated into some of the church's features. The cathedral was consecrated on 7 November 1973 and has subsequently been used for all the Church of Ceylon's major religious ceremonies, including the consecration of all the bishops of Ceylon. The cathedral is based on the traditional style of Sri Lanka architecture, in this case the hexagonal form of a Buddhist temple, using modern concrete technology. It is the seat of the Bishop of Colombo.

The Chinese Ambassador to Sri Lanka is the official representative of the People's Republic of China to the Democratic Socialist Republic of Sri Lanka.

The Sinhalese Sports Club Cricket Ground (SSC Cricket Ground) (Sinhala: සිංහල ක්‍රිඩා සමාජ ක්‍රීඩාංගනය; Tamil: சிங்களவர் விளையாட்டுக் கழக அரங்கம்) is one of the most famous cricket grounds in Sri Lanka, and the headquarters of Sri Lanka Cricket, the controlling body of cricket in Sri Lanka. The ground is sometimes described as "the Lord's of Sri Lanka", It hosts the most domestic finals and is an important international cricket venue. The ground staged its first Test in 1984 against New Zealand and its first One Day International in 1982 against England. The Sri Lankan team has an impressive record here. Out of 38 Tests played at the SSC as of January 2015, Sri Lanka has won 18 matches, and drawn 14, with only 6 losses.

Nondescripts Cricket Club Ground, a first-class cricket ground in Maitland Place, Colombo, is the home ground of the Nondescripts Cricket Club.

Indonesia and Sri Lanka established diplomatic relations on 6 August 1952. Both nations share some cultural similarities. Indonesia and Sri Lanka are members of numerous organizations such as the World Trade Organization and Indian-Ocean Rim Association. They are also founding members of the Non-Aligned Movement. Indonesia has an embassy in Colombo, while Sri Lanka has an embassy in Jakarta. Regarding the LTTE separatism in Sri Lanka, Indonesia has expressed their support on Sri Lankan territorial integrity and national unity. Indonesia also supports the national reconciliation process in Sri Lanka towards peace and stability.

Sri Lanka Cricket Museum is located at Maitland Place, Colombo, Sri Lanka, at the former Asian Cricket Council headquarters, adjacent to the headquarters of Sri Lanka Cricket.It was officially opened by Minister of Sports Harin Fernando on 20 February 2019 and is operated by Sri Lanka Cricket. The Sri Lanka Cricket Museum covers the history of cricket in the country. The museum documents the country's journey towards becoming a test nation and its achievements made during the pre and post test era. It includes a 'Hall of Fame', as well as significant cricketing ‘moments’ and ‘turning points’ in Sri Lanka's cricketing history. The gallery contains 1996 World Cup trophy, 2014 T20 World Cup trophy.

The Sri Lanka Sustainable Energy Authority (or SLSEA) is the primary body responsible for the issuance of licenses for sustainable energy developments in Sri Lanka. In addition to being the key licence provider, it is also the organization responsible for promoting renewable energy and sustainable developments in the country.