Plovdiv once-bright greens and blues. Torah scrolls are kept in the gilded Aron-ha-Kodesh. The Plovdiv Drama Theatre is a successor of the first professional theatre group in Bulgaria founded in 1881. The Plovdiv Puppet Theatre, founded in 1948, remains one of the leading institutions in this genre. The Plovdiv Opera was established in 1953. Another pillar of Plovdiv's culture is the Philharmonic, founded in 1945. Soloists such as Dmitri Shostakovich, Sviatoslav Richter, Mstislav Rostropovich, Yuri Boukov, and Mincho Minchev have worked with the Plovdiv Philharmonic. The orchestra has toured in almost all of the European countries. The Trakiya Folklore Ensemble, founded
Plovdiv Arts; and others. The 2009 International Olympiad in Informatics (IOI) was held at the University of Plovdiv "Paisiy Hilendarski", between 8 and 15 August 2009. The 2009 IOI Honorary Patron was Bulgarian President Georgi Parvanov. Between 1875 and 1906, the Zariphios School was one of the local Greek educational institutions that provided elementary and secondary education. Plovdiv Sports Complex consists of Plovdiv Stadium with several additional football fields, tennis courts, swimming pools, a rowing base with a 2 km-long channel, restaurants, and cafés in a spacious park in the western part of the city just south of the Maritsa river.