(Rotterdam) and Ajax (Amsterdam). There is a saying: "Amsterdam to party, Den Haag (The Hague) to live, Rotterdam to work". Another one, more popular by Rotterdammers, is "Money is earned in Rotterdam, distributed in The Hague and spent in Amsterdam". Another saying that reflects both the rivalry between Rotterdam and Amsterdam is "Amsterdam has it, Rotterdam doesn't need it". Bright magazine editor Erwin van der Zande notes that this phrase is on T-shirts in Rotterdam. In terms of alternative culture, Rotterdam had from the 1960s until the 2000s a thriving squatters movement which as well as housing thousands of people, occupied venues, social centres and so on. From this movement came clubs like Boogjes, Eksit, Nighttown, Vlerk and Waterfront. The Poortgebouw was squatted in the 1980s and quickly legalised. Rotterdam is also the home of Gabber, a type of hardcore electronic music popular in the mid-1990s, with hard beats and samples. Groups like Neophyte and Rotterdam Terror Corps (RTC) started in Rotterdam, playing at clubs like Parkzicht. On 30 August 2019, it was announced by the European Broadcasting Union and Dutch television broadcasters AVROTROS, NOS and NPO, that Rotterdam would host the Eurovision Song Contest 2020, following the Dutch victory at the contest in Tel Aviv, Israel with the song "Arcade", performed by Duncan Laurence. However, due to the COVID-19 pandemic in Europe, the 2020 contest was cancelled, and Rotterdam was later retained as host of the contest. The contest took place at the Rotterdam Ahoy, with the semi-finals taking place on 18 and 20 May 2021, and the final taking place on 22 May 2021. This was the first time that Rotterdam hosted the contest, and the first time that the Netherlands hosted the contest since , when it was held in The Hague. Museums Rotterdam has many museums. Well known museums are the Museum Boijmans Van Beuningen, Het Nieuwe Instituut, the Wereldmuseum, the Kunsthal, [[Kunstinstituut Melly ]] and the Maritime Museum Rotterdam. The Historical Museum Rotterdam has changed into Museum Rotterdam which aims to exhibit Rotterdam as a contemporary transnational city, and not a past city. Other museums include the tax & customs museum, the Netherlands Marine Corps Museum and the natural history museum. Green parts of Rotterdam A number of well-known parks in Rotterdam are: Arboretum Trompenburg in Kralingen. The park dates back to 1820, but it was only after it was opened to the public in