centre also has many great examples of Gothic revival architecture, such as the Kalpaka Boulevard Library, and a bevy of Art Nouveau architecture, as well as a medieval old town. Art Nouveau Riga has one of the largest collections of Art Nouveau buildings in the world, with at least 800 buildings. This is due to the fact that at the end of the 19th and beginning of the 20th centuries, when Art Nouveau was at the height of its popularity, Riga experienced an unprecedented financial and demographic boom. In the period from 1857 its population grew from 282,000 (256,200 in Riga itself and another 26,200 inhabitants beyond the city limits in the patrimonial district and military town of Ust-Dvinsk) to 472,100 in 1913. The middle class of Riga used their acquired wealth to build imposing apartment blocks outside the former city walls. Local architects, mostly graduates of Riga Technical University, adopted current European movements and in particular Art Nouveau. Between 1910 and 1913, between 300 and 500 new buildings were built each year in Riga, most of them in Art Nouveau style and most of them outside the old town. Sports Riga has a rich basketball history. In the 1950s, Rīgas ASK became the best club in the Soviet Union and also in Europe, winning the first three editions of the European Cup for Men's Champions Clubs from 1958 to 1960. In 1960, ASK was not the only team from Riga to take the European crown. TTT Riga clinched their first title in the European Cup for Women's Champion Clubs, turning Riga into the capital city of European basketball because for the first and, to date, only time in the history of European basketball, clubs from the same city were concurrent European men's and women's club champions. In 2015, Riga was one of the hosts for EuroBasket 2015. Sports clubs Basketball BK VEF Rīga – a professional basketball team that is a three-time Latvian champion. VEF also participates in high-level international competition such as Eurocup Barons LMT – a men's basketball team, two-time Latvian champion, as well as the 2008 FIBA EuroCup winner TTT Riga – a women's basketball team, which between 1960 and 1982 won eighteen FIBA EuroLeague Women titles Ice hockey Dinamo Riga – a professional ice hockey club established in 2008. It played in the Kontinental Hockey League until 2022. Dinamo was established as a successor to