Katajanokka Airport

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.

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.

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.

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.

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.

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.

Tervasaari (Swedish: Tjärholmen), meaning "tar island", is an island in Helsinki, Finland, in front of the district of Kruununhaka. Tervasaari is connected to the mainland by a long causeway called Tervasaarenkannas. The causeway is connected to the Pohjoisranta street on the eastern edge of the city centre.Facilities on the island include a granary restaurant, a children's play park, an area for dogs with a dog swimming place, an event venue and a pier for washing mats. Tervasaari was renovated into a functional island in the 1990s.

SkyWheel Helsinki is a 40-meter (131 feet) tall Ferris wheel in central Helsinki, Finland. One of its gondola cabins, the SkySauna, is the world's first sauna on a Ferris wheel. It opened to the public on June 3, 2014. It was originally named the Finnair SkyWheel and its placement on Katajanokka harbor is where the airline Finnair first located its flight operations in the 1920s.

Uspenski Cathedral (Finnish: Uspenskin katedraali, Swedish: Uspenskijkatedralen, Russian: Успенский собор, Uspenskij sobor) is an Eastern Orthodox cathedral in Helsinki, Finland, and main cathedral of the Orthodox Church of Finland, dedicated to the Dormition of the Theotokos (the Virgin Mary). Its name comes from the Old Church Slavonic word uspenie, which denotes the Dormition.

The Mannerheim Museum is located in Helsinki, Finland. It is dedicated to preserving and displaying items related to the life and times of Marshal C. G. E. Mannerheim, a Finnish statesman and military officer. The Mannerheim Museum is located on top of a hill in a prestigious residential area next to the Kaivopuisto park in Helsinki. The building was the home of Mannerheim from 1924 to 1951. With the exception of a few rooms that have been converted for exhibition purposes, his home has been preserved in its original state.

The Embassy of the United States in Helsinki (Finnish: Yhdysvaltain suurlähetystö Helsingissä) is the diplomatic mission of the United States to Finland.