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Onassis Stegi (Greek: Στέγη Ιδρύματος Ωνάση), formerly known as the Onassis Cultural Center (Greek: Στέγη Γραμμάτων και Τεχνών του Ιδρύματος Ωνάση), is a cultural venue in Athens, Greece, owned by the Onassis Foundation. Afroditi Panagiotakou serves as Director of Culture of the Onassis Foundation and Stegi respectively.^[1][2]

The Onassis Stegi is located on Syngrou Avenue and occupies a total area of 18,000 square meters. Its construction began in 2004 on a privately owned three-acre area under the funding of the Foundation. It was designed by the French architecture firm Architecture-Studio, selected after a competition phase.^[3] It comprises a complex that includes two main halls, with a capacity of c. 900 and 200 seats respectively,^[3] where various events are held: theater and dance performances, concerts, film screenings, lectures, and conferences. The building also has an exhibition space and a restaurant.^[4]

The building's opening ceremony took place on December 7, 2010, in the presence of the President of the Hellenic Republic, Karolos Papoulias and other dignitaries.^[5][6][7] The first production presented on the Main Stage of the Onassis Stegi, directed by Michael Marmarinos, was inspired by Bertolt Brecht’s poem "Questions from a Worker Who Reads." and it was a tribute to the workers of the construction.^[8] The venue officially opened to the public on December 11, 2010, presenting a variety of concerts and theatre performances.^[4]

Onassis Stegi aims to promote contemporary culture, present new original works in collaboration with artists from Greece,^[9][10] host performances by established artists, invest in the integration of works with cutting-edge technologies, and support newcomer artists from various fields through scholarships and awards.^[1] Moreover, it hosts discussions open to the public about human rights, democracy, social justice, and the climate crisis. Over the years various artists and authors from Greece and abroad have collaborated with Onassis Stegi including notable actresses,^{[11][12][13][14]} choreographers,^[15][16] writers,^[17][18] directors,^[19][20] musicians,^[21] artists,^[22][23][24] et al. It is estimated that approximately 300,000 people visit its premises annually.^[7] In addition events under Onassis Stegi are organized in the wider metropolitan area of Athens.

During the COVID-19 pandemic in Greece, Onassis Stegi made its performances’ archive accessible on YouTube for free.^[25]

The Onassis Stegi has presented several theater, dance, and music performances, such as Can We Talk About This? by DV8 (2011),^[23] Refuse the Hour by William Kentridge (2012),^[26] Aristophanes’ The Birds by Nikos Karathanos, The Great Tamer by Dimitris Papaioannou and Akram Khan’s Xenos.^[16] Music concerts are also held.^{[27][28][29][30]}

The Onassis Stegi, in collaboration with the Municipality of Athens, has presented a series of large-scale artworks by Greek artists, in various city sites, including Avdi Square in Metaxourgeio,^[31] Patision Street,^[32][33] Omonia Square^[34] and Neos Kosmos.^[29]

In 2021, Onassis Stegi organized at Pedion Areos in Athens, You and AI, an open air group exhibition dedicated to the presence and impact of artificial intelligence in human everyday lives.^[35][36] The following year, Stegi organized again in Pedion Areos, a digital art exhibition Plásmata: Bodies, Dreams, and Data, presenting 25 works by Greek and foreign artists.^[37] In 2023, Plásmata II was held in Ioannina.^[37][38]

Onassis Stegi participates in co-productions in Greece and abroad by inviting foreign artists and also by supporting the promotion of Greek culture worldwide. Among the institutions and theaters with which the Onassis Stegi has collaborated through the years are Emilia Romagna Teatro (Italy), Münchner Kammerspiele (Germany), Théâtre de la Ville (Paris, France), Kampnagel (Germany), Théâtre de Liège (Belgium), Almeida Theatre (UK), Internationaal Theater Amsterdam (The Netherlands), Théâtre de Vidy, and Teatro della Pergola.^{[39][40][41][42][43][44]}

Apart from its cultural dimension, Onassis Stegi takes a public stand regarding several social and political issues,^[1][45] including the trial of the Golden Dawn neo-Nazi political party,^[46] the court proceedings for the murder of LGBTQI+ activist Zak Kostopoulos,^[47] the anniversary of the Alexandros Grigoropoulos murder^[48] etc. Further on, Olympic champion Sofia Bekatorou made her sexual abuse known for the first time through a Onassis Stegi seminar that addressed gender violence, marking the beginning of the Greek #MeToo movement.^[1][49][50] Stegi was the first cultural organization in Greece to conduct "blind" recruitment interviews to eliminate stereotypes.^[51]

37°57′28″N 23°43′09″E / 37.9579°N 23.7192°E / 37.9579; 23.7192