A unique exhibition space of the so-called First Open Studio which was, on 19 November 1970, held in Rudolf Sikora's private house in the Tehelná Street in Bratislava. The event showed the most important innovative Czechoslovakian Neo-Avant-Garde artistic practices of 1960s and 1970s: conceptual practices, body art, actions, land art, object art, installations, Fluxus, kintetic art. The one-day event gathered 19 artists from three different generations: Milan Adamčiak (1946), Peter Bartoš (1938), Václav Cigler (1929), Róbert Cyprich (1951 – 1996), Milan Dobeš (1929), Igor Gazdík (1943), Viliam Jakubík (1945), Július Koller (1939 – 2007), Vladimír Kordoš (1945), Ivan Kříž-Vyrubiš (1941), Otis Laubert (1946), Juraj Meliš (1942), Alex Mlynárčik (1934), Marián Mudroch (1945), Jana Shejbalová-Želibská (1941), Rudolf Sikora (1946), Ivan Štěpán (1937), Dezider Tóth (1947), Miloš Urbásek (1932).