Samudrasanna Vihara

S. Thomas' College, Mount Lavinia (abbreviated as STC), is a fee-levying Anglican selective entry boys' private school in Sri Lanka. Started as a private school by James Chapman, the first Anglican Bishop of Colombo, in 1851, it was founded as a college and cathedral for the new Diocese of Colombo of the Church of Ceylon, modelled on British Public school tradition. An old boy of Eton College, Bishop Chapman founded the college on the Etonian model, the school's motto of Esto perpetua being derived from that of Eton College. Following the public school tradition, S. Thomas' College is a partial boarding school, with some pupils living at the school seven days a week, and others residing in Day houses. Having been founded in 1851, it is among the oldest schools in Sri Lanka. With a student body of approximately 2,800, S. Thomas' is considered as one of the most prestigious schools in Sri Lanka; a factor leading to its competitive rivalry with Royal College, Colombo. This rivalry has led to a Royal–Thomian tradition with the annual Royal-Thomian Big Match, the Royal-Thomian Rugby Match, the Royal-Thomian Water Polo Matches, and the Royal Thomian Regatta. The college has educated prime ministers, world leaders, sportsmen and Booker Prize winners. The alumni of S. Thomas' College are referred to as Old Thomians, and include D. S. Senanayake, the first prime minister of Ceylon, S. W. R. D. Bandaranaike and two other prime ministers. Many of the prominent leaders of Sri Lanka's independence movement in the early twentieth century were educated at the college. These include Leslie Goonewardene, who founded Sri Lanka's first political party, the Lanka Sama Samaja Party and N. M. Perera, who served as leader of the opposition and the first Trotskyist to become a cabinet minister.

Sri Pushparama Vihara ( Sinhala: ශ්‍රී පුෂ්පාරාම විහාරය) is a historic Buddhist temple situated in Ratmalana, Western province, Sri Lanka. It is located at Sri Dharmarama junction on the Colombo-Galle main road. The temple has been formally recognised by the Government as an archaeological site in Sri Lanka. The designation was declared on 23 February 2007 under the government Gazette number 1486.

Christ Church, (also known as the Church of the Open Door) is an Anglican church in Dehiwala-Mount Lavinia in Sri Lanka. The church is located on Colombo-Galle main road (A2) approximately 0.35 km (0.22 mi) away from the Dehiwala junction. It was consecrated on 16 February 1843. The four tombs within the church's graveyard have been formally recognised by the Government as archaeological protected monuments in Sri Lanka. The designation was declared on 6 June 2008 under the government Gazette number 1553.

Sri Subodharama Raja Maha Vihara (Also known as Karagampitiya Vihara) is a historic Buddhist temple situated at Dehiwala in the Western province, Sri Lanka. The temple is located at the Dehiwala junction on the Colombo-Galle main road, about 9 miles south of Colombo city. The temple has been formally recognised by the Government as an archaeological site in Sri Lanka. The designation was declared on 23 February 2007 under the government Gazette number 1486.

Kandawala was the home of General Sir John Lionel Kotelawala CH KBE LLD (4 April 1897 - 2 October 1980) was a Sri Lankan politician, most notable for serving as Prime Minister of Ceylon from 1953 to 1956. The house is located in a 48-acre (190,000 m2) estate that includes a lake known as Kandawala lake. John Kotelawala bought Kandawala estate with its small three bed-roomed house in 1920 at a public auction. In 1926, Kandawala built a two-story main house as his primary residence and office. This is known as Kandawala Valava, and it is the design of an expert architect, Mr. Siribaddhana Divithotavala, who designed the Demodara Nine Arch Bridge and Horagolla Valava. The main house was built by Kotelawala in 1926. He moved in soon after its completion. During World War II, the house was used as the station headquarters and officers mess for the RAF based at the Ratmalana Airport. Kotelawala remained at Kandawala even after he became Prime Minister and did not move into Temple Trees. He carried out much state business from his office in Kotelawala. After his death, in accordance with Sir John's last-will, Kandawala Estate was handed over to the Sri Lankan military to be turned into a Tri-Service Defence Academy. In 1985 the Sri Lankan Government established General Sir John Kotelawala Defence Academy at Kandawala named after him, it was renamed General Sir John Kotelawala Defence University in 2007.

Ratmalana is a suburb in Colombo District, Western Province, Sri Lanka. It is inside the administration boundary of Dehiwala-Mount Lavinia Municipal Council. Ratmalana is situated 14.6 km south of Colombo city centre. Ratmalana Airport located here was the country's first and main international airport until the inauguration of Bandaranaike International Airport, Katunayake in 1967. Ratmalana is also the birthplace of Sir John Kotelawala, the third Prime Minister of Sri Lanka (then Ceylon) elected in 1953. Maliban Biscuit Manufactories, one of the largest manufacturers, distributors and marketers of bakery products in Sri Lanka, is headquartered in Ratmalana.

Ratmalana International Airport (Sinhala: රත්මලාන ජාත්‍යන්තර ගුවන්තොටුපළ, romanized: Ratmalāna Jātyantara Guvantoṭupaḷa; Tamil: இரத்மலானை சர்வதேச விமான நிலையம், romanized: Iratmalāṉai Sarvadesa Vimāṉa Nilaiyam) (officially known as Colombo International Airport, Ratmalana and locally as Ratmalana Airport) (IATA: RML, ICAO: VCCC), is the secondary international airport serving the city of Colombo, the capital of Sri Lanka. It was the country's first international airport and was the only international airport in Sri Lanka until the inauguration of Bandaranaike International Airport, Katunayake, in 1967. The airport currently serves several domestic services and is home to several aviation training organisations. A relaxation of rules has recently seen the airport open for international corporate jet operations and charter flights. The airport is located 15 km south of Colombo City. The strategic significance of Ratmalana International Airport has been identified along with the emerging Colombo Financial City, High End Tourism and business travel needs of High Net Worth Individuals (HNWIs). The long-term strategic goal of RMA is to bring the airport to the optimum operational capacity by maximum utilization of existing resources. Therefore, to achieve this goal, five strategic areas with specific strategies have been identified as Corporate Jet Operations, Domestic Aviation Hub, Aviation Training hub in the Region, FBO & MRO investments and Regional Airports Operations.

The National Water Supply and Drainage Board (commonly abbreviated as NWSDB) is the National Organization responsible for the provision of safe drinking water and facilitating the provision of sanitation to the people in Sri Lanka. The organization had its beginning as a sub department under the Public Works Department for water supply and drainage. In 1965, it became a division under the Ministry of Local Government. From 1970, this division functioned as a separate department under the Ministry of Irrigation, Power and Highways and remained so until the present board was established in January 1975 by an act of Parliament of Sri Lanka. The main functions of the National Water Supply & Drainage Board (NWSDB), which presently functions under the Ministry of Water Supply & Drainage are operation and maintenance of water supply and sewerage schemes, implementation of new urban and rural water supply projects, carrying out sector planning, feasibility studies, detailed designs, tender documentation, contract administration, project supervision and research and development work in the water and sanitation sector.

The Sri Lanka Air Force Museum (SLAF Museum) is the museum of the Sri Lanka Air Force, and its predecessor, the Royal Ceylon Air Force. Open to the public, the museum is at the SLAF Ratmalana and is maintained by the Sri Lanka Air Force.

General Sir John Kotelawala Defence University (KDU) (Sinhala: ජෙනරාල් ශ්‍රිමත් ජෝන් කොතලාවල ආරක්ෂක විශ්ව විද්‍යාලය General Sir John Kotelawala Arakshaka Vishva Vidyalaya) located at Kandawala, Ratmalana, Colombo, is state defense university of Sri Lanka which is administered by the Ministry of Defense. The General Sir John Kotelawala Defence Academy was established in 1980 by the Sir John Kotelawala Defence Academy Act, No. 68 of 1981 as the joint defence service training institute of the Sri Lankan Armed Forces, where cadets of the three services, Sri Lanka Army, Sri Lanka Navy and Sri Lanka Air Force under go academic training together before they go on to respective service academy for further pre-commission training. It was named after General Sir John Kotelawala, third Prime Minister of Ceylon who donated his home for the academy. It was made a university by an amendment bill passed in Parliament on 11 October 2007 which lead to both military and civil students to be admitted.

National Zoological Gardens of Sri Lanka (also called Dehiwala Zoo or Colombo Zoo) is a zoological garden in Dehiwala, Sri Lanka, founded in 1936. It is home to various birds, mammals, reptiles, fish and amphibians. The zoo not only exhibits animals from Sri Lanka, but also exhibits species from across Asian and other parts of the globe. As of 2005, the zoo has 3,000 animals and 350 species. The annual revenue is LKR 40 million. The Dehiwala Zoo exchanges its residents with other zoological gardens for breeding purposes. In June 2021, a lion named Thor which had been living in the zoo since 2012 reportedly tested positive for COVID-19.

The University of Vocational Technology (UoVT) Sinhala: වෘත්තීය තාක්ෂණ විශ්වවිද්‍යාලය, Tamil: இலங்கை வாழ்க்கைதொழில் தொழிநுட்பவியல் பல்கலைக்கழகம் is established by the parliamentary Act No. 31 of 2008, in 2009 and functions under the purview of the Ministry of Higher Education, Technology and Innovation . The general objective of the University of Vocational Technology is to provide progressive upward movement to the students in the Engineering Technology Education and Industrial Training System, based on their aptitudes and abilities, to acquire university education.The University of Vocational Technology hosts four faculties, fourteenth departments, and teaches about 5000 students in the fields of mechatronics, manufacturing, IT(software), IT(Network), IT(Multimedia & Web), food, film and television production, building services technology, construction technology, industrial management and teaching.