Luckily, Buenos Aires’ cultural calendar this weekend offers plenty of reasons to venture out, whether you’re after a memorable meal, an unusual art experience, or a night at the movies. Francis Mallmann at NESSSaturday, Aug. 1, lunch serviceNess (Grecia 3691)AR$150,000 per personOne of Argentina’s most celebrated chefs is heading to Buenos Aires for a lunch with a purpose. The lunch is part of NESS’s ongoing series of culinary collaborations that bring together acclaimed chefs while fostering a spirit of shared tables and community. Reservations begin at 12 p.m., subject to availability, and cost AR$150,000 per person, including the tasting menu, wine pairings and soft drinks. (“They all must go”), the police repression and the political instability that saw five presidents take office in rapid succession.