Tervasaari

Katajanokka Casino is a restaurant and function venue in the Katajanokka neighbourhood of Helsinki. The building is located upon a promontory on the north side of the island next to the marina. It is not a casino in the sense of a gambling establishment.

Merikasarmi (originally known as Katajanokan kasarmi) is a barracks building in Katajanokka, Helsinki, Finland, originally built for the military of the Empire of Russia from 1816 to 1820, which currently houses the premises of the Ministry for Foreign Affairs in Finland. The barracks was designed by Carl Ludvig Engel. Before the Foreign Ministry moved to the area in the late 1980s the buildings were renovated and partly rebuilt according to the plans of Professor of Architecture Erik Kråkström. To the north of the Merikasarmi building, the icebreakers of the Finnish state are anchored to the Katajanokka quay.

Guggenheim Helsinki Plan was an initiative to establish a Guggenheim museum in Helsinki, Finland. A proposal was introduced to the Helsinki City Council in 2011. After rejection of the initial plan in 2012, a new plan, introduced in 2013, was considered and finally rejected in 2016. Following the 2011 proposal of a plan by the Solomon R. Guggenheim Foundation for a museum next to South Harbour, Helsinki, a debate was waged among local political and culture activists. The project's construction costs were estimated at 130–140 million euros to be paid by the city of Helsinki and the Finnish State. Guggenheim's license fee for the first 20 years was estimated as 23.4 million euros. Running costs of 14.4 million euros per year would outstrip annual admission fees of only 4.5 million euros. A survey found that 75% of citizens in Helsinki, and 82% of citizens in Vantaa, opposed the project. The Helsinki City Council rejected the plan in 2012. In 2013, Finland's Parliamentary Ombudsman issued a report concluding that Finnish investor and art collector Carl Gustaf Ehrnrooth, a member of the Board of Directors of the Guggenheim Foundation, and Janne Gallen-Kallela-Sirén, director of the Helsinki City Art Museum and a chief exponent of the Guggenhiem plan, had conflicts of interest involving the plan and each other. In September 2013, the Guggenheim Foundation advanced a revised proposal that sought to address the concerns. Operating cost estimates were revised downwards, while revenues were forecast by the Foundation to increase. In 2014, the city board agreed to reserve a new site for a potential museum at Eteläsatama and authorized the Foundation to hold an international architecture competition to design the potential museum. The competition, which was organised by London-based specialists Malcolm Reading Consultants, drew a record 1,715 submissions, and six finalists were announced. In June 2015 the French-Japanese architecture firm Moreau Kusunoki Architectes was selected as the winner. In December 2016, the Helsinki city council rejected the plan.

Katajanokka (Swedish: Skatudden) is a neighbourhood of Helsinki, Finland, with around 4000 inhabitants in 2005. The district is located adjacent to the immediate downtown area, though in the first major town plan for Helsinki from the mid-18th century, the area fell outside the fortifications planned to encircle the city. Originally, it was a headland of the Helsinki peninsula but is now technically an island, as a small canal was dug across the base of the headland in the 19th century. Katajanokka is one of the most distinguished neighbourhoods in Helsinki. Katajanokka's residents have included former Finnish President (from 1982 to 1994) Mauno Koivisto and composer Einojuhani Rautavaara.

The Helsinki County Prison ("Helsingin lääninvankila" in Finnish) in the Helsinki city quarters of Katajanokka was a prison that operated from 1837 to 2002. It was established in 1837 by Tsar Nikolai I by the side of the Helsinki Crown Prison, which had operated from 1749. When completed, the prison had 12 cells, two rooms for guards and a worship room which is still extant and has been used for church weddings. The prison area was surrounded by a high red brick wall. The prison was extended in 1888 with the construction of a cell block in the form of a cross, in the classical Philadelphia model; the old part of the prison was converted to an administrative building. The prison continued functioning after Finnish independence. During the Second World War, the prison was directly hit by an air strike on 6 February 1944. One guard was killed, a fire started and five prisoners used the opportunity to escape. At the end of the war, some well known convicts from the War-responsibility trials in Finland were kept in the prison, including President Risto Ryti, Prime Minister Väinö Tanner,. The Estonian-born writer Hella Wuolijoki. was there for high treason during World War II. Another inmate of note was Martta Koskinen, a seamstress and communist spy convicted of high treason who was executed by a firing squad on September 29, 1943. She was the last woman executed in Finland. During its last years, Helsinki County Prison functioned as a remand prison, where arrested suspects were kept while awaiting trial. To reflect this, in 2001 the prison was renamed Helsinki Remand Prison. Some of the prisoners were also criminals that had failed to pay fines to which they had been sentenced. In 2002, prison operations ceased completely with the completion of the new Vantaa prison. The building was renovated within the constraints of being a protected landmark and was re-opened in 2007 as a hotel.

Nihti (Swedish: Knekten) is an island on the Kruunuvuorenselkä water area in the Sörnäinen district in Helsinki, Finland. On the northern side of the Nihdinkanava channel is the island of Sompasaari.

Wanha Satama (Finnish for "old harbour") is an exhibition centre in Helsinki, Finland. Wanha Satama is located in Katajanokka, a maritime district just east of the city centre. In Katajanokka, it is located very near the seaside and close to the Viking Line terminal. The Wanha Satama building is an old brick building originally dating back to the 19th century. It was renovated into an exhibition centre in the 1990s.

Hanasaari (Swedish: Hanaholmen) is a neighbourhood in the district of Sörnäinen in Helsinki, Finland, between the neighbourhoods of Vilhonvuori, Kalasatama and Sompasaari near Merihaka. The name comes from an island that was lost under reclaimed land. Hanasaari is primarily a power plant area. The first power plant was built next to Hanasaari in Suvilahti.

Hanasaari Power Plant (also referred as Hanasaari B power plant to distinguish from the dismantled power plant located at the same site) is a coal-fired cogeneration power plant in Sörnäinen, Helsinki, Finland. Its chimney has a height of 150 metres (490 ft).

Sörnäinen Harbour (Finnish: Sörnäisten satama, Swedish: Sörnäs hamn) was for nearly one and a half centuries a major harbour and freight terminal in the Port of Helsinki, located in the Sörnäinen district on the eastern shore of the Helsinki city centre area.It was opened in 1863 to serve mainly the country's timber export trade, in 1889 an oil import terminal was added, and more recently containerised cargo and some passenger traffic. The harbour was finally closed down after 145 years of operation in November 2008, when the new Vuosaari Harbour was opened in the eastern suburb, and the facilities moved there. The only remaining functions relate to the adjacent Hanasaari Power Plant, which is itself being gradually decommissioned.The port facilities were connected to the rail network at Pasila station via a branch line called Sörnäinen harbour rail, which originally ran through Vallila, but which in 1965 was re-routed around the inner city area via Kumpula.Since its closure, the harbour area has been redeveloped for residential, retail and leisure use, as part of the Kalasatama development.The harbour was also commonly referred to as 'Sompasaari Harbour', after a small island which originally was located immediately to its south, but which the harbour development had subsumed under reclaimed land.

Merihaka (Swedish: Havshagen) is a coastal residential area in central Helsinki, Finland consisting of large high-rise concrete housing blocks. It is located by the Baltic Sea next to districts of Hakaniemi, Kallio and Sörnäinen. It is known for its tall, grey buildings. The residents of Merihaka tend to value highly the scenery, central location, tranquil atmosphere and lack of cars. The housing complex was built, partly on reclaimed land, during the 1970s and 1980s, and today it is home to some 2,300 people.A distinctive feature, shared with some other places in Helsinki such as Itä-Pasila, is traffic segregation: the streets for cars and buses together with large car parks are on a level of their own, below that of pedestrian footways and the main entrances to the buildings. This arrangement was to increase the cosiness of the area as well as improve traffic safety. The area has a central location, only about 1 kilometre (0.62 mi) from the core of downtown Helsinki. Some flats with sea views command very high prices. The attractiveness of Merihaka is increased by its small-boat harbour and many residents are members of the local yacht club. Public transportation possibilities are diverse and rapid. Former residents Merihaka include the former prime minister of Finland, Kalevi Sorsa. There is also a very active sports hall in Merihaka.

Katajanokka Terminal (Finnish: Katajanokan terminaali, Swedish: Skatuddens terminal) is a ferry terminal located in Katajanokka, in the Southern Harbor of Helsinki, Finland. The shipping company Viking Line operates scheduled services from the terminal to Stockholm and Tallinn. The terminal building was originally a customs warehouse, the harbour building K8. It was built in 1937 designed by the city architect Gunnar Taucher. The building was changed to a passenger terminal in 1977, when the Finnjet started traffic between Helsinki and Travemünde, Germany. The work for the change was designed by the harbour architect Kari Unelius. The terminal building has since been expanded many times, the latest time so far in 2008 with a new glass-walled expansion on the shore side, which was designed by architect Ari Bungers. The building is protected.Opposite the terminal entrance is the anchor of the Russian passenger ship Iezekiil which sank in 1855. The anchor was found by divers near Suomenlinna in 1977.The terminal is served by the Helsinki tram lines 5 and 4.