Joint Ventures is a public program series launched at Belvedere 21 in 2018. It includes performances, readings, concerts, film screenings, presentations, and talks. All events take place outdoors in the sculpture garden of the Belvedere 21 and are free of charge.

The Community Outreach program explicitly targets and actively involves the various groups and communities in the social and geographical vicinity of the Belvedere 21. Specifically, the program is concerned with collaborative projects that focus on thematic priorities, which are implemented both outside the museum and in the public space. The geographical range stretches from the Karlsplatz, the Quartier Belvedere, and the Arsenal to the Brotfabrik cultural center in the 10th district and the urban development area of the Sonnwendviertel.