Mariehamn (məˈriːəhɑːmən , mɑriːeˈhɑmn; Maarianhamina ˈmɑːriɑnˌhɑminɑ; Portus Mariae) is the capital of Åland, an autonomous territory under Finnish sovereignty. Mariehamn is the seat of the Government and Parliament of Åland, and 40% of the population of Åland live in the city. It is mostly surrounded by Jomala, the second largest municipality in Åland in terms of population; to the east it is bordered by Lemland. Like all of Åland, Mariehamn is unilingually Swedish-speaking and around of the inhabitants speak it as their native language. The theme of the coat of arms of Mariehamn refers to the city's main livelihood, a maritime transport, and the city's parks, which are typically lined with linden trees. The coat of arms was designed by Nils Byman and confirmed in 1951. Due to its central location in the Baltic Sea, Mariehamn has become a major summer resort town for global tourism; as many as 1.5 million tourists visit there annually. The town was named after the Russian empress Maria Alexandrovna (1824–1880), literally meaning "Marie's Port". Mariehamn was founded in 1861, around the village of Övernäs, in what was at the time part of the municipality of Jomala. The city has since expanded and incorporated more of Jomala territory. Mariehamn was built according to a very regular scheme which is well-preserved. One of the oldest streets is Södragatan where many wooden houses dating from the 19th century can be seen. Following the First World War, Mariehamn was home to the Mariehamn Grain Fleet. On November 8, 1963, a devastating plane crash occurred in Mariehamn, in which 22 out of 25 people lost their lives, which made it the second-deadliest aviation accident in the history of Finland. The city is located on a peninsula. It has two important harbours, one located on the western shore and one on the eastern shore, which are ice-free for nearly the whole year, and have no tides. The Western Harbour is an important international harbour with daily traffic to Sweden, Estonia and mainland Finland.