Helsinki County Prison

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 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.

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 Katajanokka Airport (Finnish: Katajanokan lentosatama) was the first airport in Finland, located in the Katajanokka neighbourhood in Helsinki. It functioned as a seaplane base in the south-eastern shore of Katajanokka during the years 1924–1936. Its history ended when the Helsinki-Malmi Airport was inaugurated on 16 December 1936. Aero Oy began its flights from Katajanokka on 20 March 1924 at 15:40 with a Junkers F 13 D-335 aircraft. The crew consisted of a German pilot and a mechanic. The first Finnish pilot, Gunnar Lihr, began his flights during the summer of the same year. The routes of Aero went to Stockholm, Tallinn and Riga. From the very start, the company had two flights to Tallinn on every day of the week. Stockholm was not as popular as Tallinn, with six flights a week. The flight to Stockholm took three hours, but in the event of contrary winds, the flight time could be up to half an hour longer.With its partners, Aero could offer flights to Königsberg, from which passengers could continued to Berlin by train.Other companies also used the Katajanokka airport, and there were also sightseeing flights operated from there.During the summer, the planes had floats, and during the winter either skis or wheels were used for landing and taking off. During rasputitsa, i.e. when the ice was only being formed or it was melting away, the flights were not operated. This period could last for up to two months each spring and autumn.In 1928, there was an attempt to move the airport to Kellosaari, now part of Ruoholahti, but this venture was not successful, and Katajanokka remained the only airport in Helsinki.

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.

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.

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.

Relandersgrund is a former lightvessel formerly located at the Relanderinmatala shallow in Rauma, Finland.

The Norrmén house, also known as the Norrmén castle and palace, was a red brick residential house representing the neo-renaissance architecture, situated for 63 years in Katajanokka, Helsinki, Finland, opposite the Uspenski Cathedral. It was designed by architect Theodor Höijer for the chairman of the Helsinki city council, Alfred Norrmén, who ordered the building plans from Höijer in 1896. The four-floor building was constructed at a fast pace, and the building was already completed in 1897. The top floor of the building contained high-class large apartments, while the much smaller apartments on the bottom floor were mainly reserved for servants. Alfred Norrmén himself lived in the building until his death in 1942. The building also hosted the Eastern Emigrants Club and its restaurant until 1944, when it was discontinued. Later the building hosted the Allied Commission. The Norrmén house was dismantled in 1960. The Enso-Gutzeit (currently Stora Enso) main office, built from white marble and designed by Alvar Aalto, was built in its place. It was completed in 1962. The dismantling of the house has been criticised ever since the year of its dismantling, and many view Aalto's new building in its place as completely unfit for the façade of Katajanokka, and the dismantling of the Norrmén house as one of the greatest wrongdoings in the history of Helsinki. Some have even proposed that Aalto's building should be dismantled and a replica of the Norrmén house should be built in its place. However, the city of Helsinki, along with the National Board of Antiquities is strongly in favour of preserving the main office building. In the 2004 film Pelikaanimies, directed by Liisa Helminen, the Norrmén house has been digitally built back in its place.