Holy Trinity Church, Helsinki

The City Centre Campus (Finnish: Keskustakampus, Swedish: Centrumcampus) is one of the four campus areas of the University of Helsinki. It is located at the historic centre of Helsinki. The campus houses the following faculties: Faculty of Arts Faculty of Behavioural Sciences Faculty of Law Faculty of Social Sciences Faculty of Theology In addition, the university central administration and several independent research institutes.

The Aleksanteri Institute (Finnish: Aleksanteri-instituutti) Finnish Centre for Russian and Eastern European Studies is an independent institute of the University of Helsinki. It functions as a national centre of research, study and expertise pertaining to Russia and Eastern Europe, particularly in the social sciences and humanities. The Institute actively promotes cooperation and interaction between the academic world, public administration, business life and civil society, both in Finland and abroad. The Aleksanteri Institute was founded in 1996 and currently employs more than 50 scholars and administrative staff. The director of the institute is Professor Markku Kangaspuro.

The National Library of Finland (Finnish: Kansalliskirjasto, Swedish: Nationalbiblioteket) is the foremost research library in Finland. Administratively the library is part of the University of Helsinki. From 1919 to 1 August 2006, it was known as the Helsinki University Library (Finnish: Helsingin yliopiston kirjasto).The National Library is responsible for storing the Finnish cultural heritage. By Finnish law, the National Library is a legal deposit library and receives copies of all printed matter, as well as audiovisual materials excepting films, produced in Finland or for distribution in Finland. These copies are then distributed by the Library to its own national collection and to reserve collections of five other university libraries. Also, the National Library has the obligation to collect and preserve materials published on the Internet to its web archive Finnish Web Archive. The library also maintains the online public access catalog Finna.Any person who lives in Finland may register as a user of the National Library and borrow library material. The publications in the national collection, however, are not loaned outside the library. The library also is home to one of the most comprehensive collections of books published in the Russian Empire of any library in the world. The National Library is located in Helsinki, close to the Senaatintori square. The oldest part of the library complex, designed by Carl Ludvig Engel, dates back to 1844. The newer extension Rotunda, designed by architect Gustaf Nyström, was completed in 1906. The bulk of the collection is, nonetheless, stored in Kirjaluola (Finnish for “book cave”), a 57,600-cubic-metre (2,030,000 cu ft) underground bunker drilled into solid rock, 18 metres (59 ft) below the library.

The Bank of Finland (Finnish: Suomen Pankki, Swedish: Finlands Bank) is the central bank of Finland. It is the fourth oldest central bank in the world.

Helsinki Cathedral (Finnish: Helsingin tuomiokirkko, Suurkirkko; Swedish: Helsingfors domkyrka, Storkyrkan) is the Finnish Evangelical Lutheran cathedral of the Diocese of Helsinki, located in the neighborhood of Kruununhaka in the centre of Helsinki, Finland at the Senate Square. The church was originally built from 1830–1852 as a tribute to the Grand Duke of Finland, Tsar Nicholas I of Russia. It was also known as St Nicholas's Church (Finnish: Nikolainkirkko, Swedish: Nikolajkyrkan) until the independence of Finland in 1917. It is a major landmark of the city, and possibly the most famous structure in Finland as a whole when viewed globally.

The National Archives of Finland (Finnish: Kansallisarkisto, Swedish: Riksarkivet) is a Finnish government agency under the Ministry of Education and Culture. It is responsible for archiving official documents of the Finnish state and municipalities. It consists of three locations in the capital Helsinki and seven former regional archives, which were incorporated into the National Archives in 2017 and have since been its branches. The task of the National Archives is to ensure official documents forming a part of national heritage are preserved. It is the official Finnish authority in archiving, and promotes the preservation of documents located in private archives. In addition, the National Archives provides their stored documents for research use and participates in research and development activities. The National Archives is also the authority in heraldry. It ratifies all heraldic emblems used by the government, municipalities and church, and flags used by yacht clubs and military units. Its library has special collections on archiving, heraldry and sigillography. The archives was created in 1816 as part of the Senate of Finland. The present main building in Helsinki was built in 1890. The present Swedish name was adopted in 1939 and the present Finnish name in 1994. It was in 1939 it also became a central government agency of its own.

Alexander II is a monumental statue located at the Senate Square in central Helsinki, Finland. The main figure in the statue depicts the Grand Duke of Finland Alexander II giving a speech at the 1863 Diet of Finland that he had assembled, wearing the uniform of an officer of the Finnish Guards' Rifle Battalion. The statue also includes four allegorical sculptures, representing four different virtues - Law (Latin: Lex), Work (Labor), Peace (Pax) and Light (Lux). Ordered by the Estates and designed by Johannes Takanen and Walter Runeberg, the monument was revealed in April 1894. The revelation was a great patriotic demonstration to the memory of emperor Alexander II, who the Finns saw as a noble ruler who had sought to limit the autocracy of the emperor.During the Russification of Finland started in 1899 by Nicholas II of Russia - the grandson of Alexander II - the statue became established as the site of anti-Russian demonstrations, remembering Alexander II who had become popularised as the "liberator emperor". There are currently only two monuments to Alexander II outside Russia on public spaces. The other one is the Monument to the Tsar Liberator in Sofia, the capital of Bulgaria. The sculpture by Mark Antokolsky is on the courtyard of the Russian art museum in Kyiv, Ukraine. There is a monumental column designed by N.I. Barinov and A.K. Brun in the Alexander Park in Odessa.

The University of Helsinki (Finnish: Helsingin yliopisto, Swedish: Helsingfors universitet, abbreviated UH) is a public research university located in Helsinki, Finland since 1829, but founded in the city of Turku (in Swedish Åbo) in 1640 as the Royal Academy of Åbo, at that time part of the Swedish Empire. It is the oldest and largest university in Finland with the widest range of disciplines available. In 2020, around 31,600 students were enrolled in the degree programs of the university spread across 11 faculties and 11 research institutes.As of 1 August 2005, the university complies with the harmonized structure of the Europe-wide Bologna Process and offers bachelor, master, licenciate, and doctoral degrees. Admission to degree programmes is usually determined by entrance examinations, in the case of bachelor's degrees, and by prior degree results, in the case of master and postgraduate degrees. Entrance is particularly selective (circa 15% of the yearly applicants are admitted). It has been ranked a top 100 university in the world according to the 2016 ARWU, QS and THE rankings.The university is bilingual, with teaching by law provided both in Finnish and Swedish. Since Swedish, albeit an official language of Finland, is a minority language, Finnish is by far the dominating language at the university. Teaching in English is extensive throughout the university at master, licentiate, and doctoral levels, making it a de facto third language of instruction. Remaining true to its traditionally strong Humboldtian ethos, the University of Helsinki places heavy emphasis on high-quality teaching and research of a top international standard. It is a member of various prominent international university networks, such as Europaeum, UNICA, the Utrecht Network, and is a founding member of the League of European Research Universities. The university has also received international financial support for global welfare; for example, in September 2021, the U.S. Department of Defense provided the university with more than four million euros in funding for the treatment of MYC genes and breast cancer.

Åbo Nation (ÅN) is one of the 15 student nations at the University of Helsinki, it is Swedish-speaking and was established in 1906.

Helsinki Christmas Market (Finnish: Tuomaan Markkinat; Swedish: Tomasmarknaden; lit. 'St. Thomas Market') is a Christmas market held every year in Helsinki, Finland. It is visited by more than 300,000 people every year. The event has been organized since 1994. Originally it was held in Esplanadi Park for a long time, until they moved to their current venue, the Senate Square.The opening of the Helsinki Christmas Market is always on 1 December and lasts until 22 December. The event brings almost 100 artisans and small producers from all over Finland, as well as more than 20 delicacy sellers, and cafe and restaurant operators to the Senate Square. There is also a vintage-styled carousel, which is free for market visitors.In November 2023, a multinational news channel CNN listed the Helsinki Christmas Market as one of the best Christmas markets in the world.

Aleksanterinkatu (Swedish: Alexandersgatan; "Alexander Street") is a street in Kluuvi, the commercial centre of Helsinki, Finland. In the city plan by Carl Ludvig Engel, it was the Decumanus Maximus, the main east–west street in the city, crossing the Cardo, Unioninkatu (Union Street) at the corner of the Senate Square. The street begins near the Presidential Palace and continues to meet with Mannerheimintie, the longest street in Helsinki. It runs past several famous buildings, such as Ritarihuone (the seat of Finnish nobility), the Helsinki Cathedral, the former Finnish main office of the Nordea bank, the main building of the University of Helsinki, and the Stockmann department store. The street, colloquially known in Helsinki as "Aleksi" (Swedish: "Alexen"), was named for Emperor Alexander I of Russia in 1833. It was originally named Suurkatu (Swedish: Storgatan), meaning "Grand Street", but was renamed after the Emperor's death in his honour. The streets crossing Aleksanterinkatu are named after the Emperor's mother, his brothers, and his sisters. Aleksanterinkatu has been the official Christmas street of Finland since 1949. At Christmas time, Aleksanterinkatu is traditionally decorated with elaborate Christmas lights between Unioninkatu and the Three Smiths Statue from late November to Epiphany. The tram lines 2, 4, 5 and 7 run along Aleksanterinkatu. Of these, only 4 and 5 run along the street's entire length.

The Senate Square (Finnish: Senaatintori, Swedish: Senatstorget) presents Carl Ludvig Engel's architecture as a unique allegory of political, religious, scientific and commercial powers in the centre of Helsinki, Finland. Senate Square and its surroundings make up the oldest part of central Helsinki. Landmarks and famous buildings surrounding the square are the Helsinki Cathedral, the Government Palace, main building of the University of Helsinki and the Sederholm House, the oldest building of central Helsinki dating from 1757.