Originally founded in 1956 and focused on Argentine and international art from the 20th century, Museo de Arte Moderno de Buenos Aires (museomoderno.org; free entrance Wed; 11am-7pm Mon, Wed-Fri, 11am-8pm Sat & Sun) is commonly referred to as Museo Moderno. Since 2018, it has been housed in an historic tobacco factory on Av San Juan. Spot the decorative number 43 on the museum's upper façade which was a well-known Argentine brand of cigarettes.
The multi-story museum has an excellent permanent collection and rotating schedule of exhibitions that cover contemporary art, performance, cinema and experimental sound. They also have a great children’s program on weekends. Be sure to head to the auditorium where you can view (behind glass) the remains of BA’s oldest home, Casa de Naranjo. It was found in its entirety when work began on the renovation of the old factory for the museum and dates from the end of the 18th century.
There’s a very small gift shop and café serving coffee and cakes - a generally cool and quiet spot with large share tables and soaring windows - perfect on hot days if you need a pause (there’s no need to pay the museum entrance fee to enter here).