Casa Rosada Museum
The museum, behind the Casa Rosada palace itself, stands on the spot occupied by the original colonial fort of Buenos Aires. It explores the history of Argentina, from colonial times to the present, and houses the remains of the original walls of the former customs house, as well as an acclaimed mural created by Mexican artist David Alfaro Siquieros. It has a collection of more than 11,000 pieces of a heterogeneous nature, that includes personal objects of the Argentine presidents, as well as historical assets and works of art. You can also find small collections of cars and coaches including probably the main vehicle attraction: Cadillac used by Juan D. Perón that he bought in 1955. It was restored for free by the Automobile Museum Foundation - the car was originally found in a state of abandonment in a shed of the Olivos Residence.
Wednesday - Sunday, and on public holidays, 10am - 6pm (last entry at 5,30pm). Entry is free.