Vuoristorata, one of the oldest still-operating wooden roller coasters in Europe, is opened at the Linnanmäki amusement park in Helsinki, Finland.

Vuoristorata is a classic wooden roller coaster located at the Linnanmäki amusement park in Helsinki, Finland. It was built in the winter of 1950 by Linnanmäki's staff on the basis of drawings by Valdemar Lebech, a Danish builder specialising in fairground rides. The construction work was led by the Danish ride operator Svend Jarlström, who at the time owned most of Linnanmäki's rides. Opened on 13 July 1951, Vuoristorata was the largest roller coaster in the Nordic countries and the tallest in Europe at the time. Expected to last up to 15 years, it was originally designed as a temporary attraction for the amusement park, opened in 1950. One of the main reasons for its construction was to attract tourists from the 1952 Summer Olympics held in the city. Since then, its temporary status was renewed for extended periods, until it was eventually regarded as a permanent structure.

Linnanmäki is an amusement park in Helsinki, Finland. It was opened on 27 May 1950 and is owned by the non-profit Children's Day Foundation, which operates the park to raise funds for Finnish child welfare work. In 2023, the foundation donated €4.5 million, and so far has donated a total of over €130 million to this cause.

Helsinki is the capital and most populous city in Finland. It is on the shore of the Gulf of Finland and is the seat of southern Finland's Uusimaa region. About 690,000 people live in the municipality, with 1.3 million in the capital region and 1.6 million in the metropolitan area. As the most populous urban area in Finland, it is the country's most significant centre for politics, education, finance, culture, and research. Helsinki is 80 kilometres (50 mi) north of Tallinn, Estonia, 400 kilometres (250 mi) east of Stockholm, Sweden, and 300 kilometres (190 mi) west of Saint Petersburg, Russia.

July 13 is the 194th day of the year in the Gregorian calendar; 171 days remain until the end of the year.