Buenos Aires Layover Near Plaza de Mayo

Plaza de Mayo itself, rather than the wider walk the main Buenos Aires guide covers, holds two free things worth the detour: the country’s oldest monument at its centre and the Banco de la Nación’s stone-columned hall on its north side, though the bank only opens Monday to Friday.

The Pirámide de Mayo, Buenos Aires’s oldest monument

A plain marble obelisk stands at the centre of the square, ordered by the Primera Junta in March 1811 to mark the first anniversary of the May Revolution and built in under two months by the architect Francisco Cañete. It was rebuilt in 1856 under Prilidiano Pueyrredón, topped with the statue of Libertad still on it today, and shifted 63 metres east in 1912 to its current spot. “25 MAYO 1810” is still cut into the base.

Painted white kerchiefs ring the paving around it, a reference to the Madres de Plaza de Mayo, who began marching here every Thursday afternoon in April 1977 demanding to know what had happened to children taken by the military dictatorship, and have kept marching since. The square has been the country’s default place for public demonstration since long before that and remains one now, so an unrelated protest or a Thursday march is a real possibility on any given visit.

The Banco de la Nación’s colonnaded hall, open weekdays only

On the square’s north side, a full city block belongs to the Banco de la Nación Argentina’s head office, designed by Alejandro Bustillo and finished in 1944 in a stone-fronted Neoclassical style, on the site of the country’s first Colón Theatre. Behind the columned entrance, the central hall’s dome runs roughly 50 metres across, one of the largest domes anywhere, over a floor of marble and granite.

It’s a working bank branch rather than a museum, no ticket and no line to get in, but that also means it keeps banking hours: 10am to 3pm, Monday to Friday, shut entirely on weekends and holidays. That’s the opposite pattern to the Casa Rosada’s own palace tours below, so the day of the week you’re passing through decides more of this itinerary than the time of day does.

Every building worth entering around this square runs you through a security check first, and none of them are built for a rolling suitcase: bags get searched or handed over at the door, so a wheeled bag isn’t getting past that point regardless of which building you’re trying.

The Casa Rosada, toured two different ways

The pink palace facing the square from the east splits into two separate visits with two separate schedules. The Museo Casa Rosada, a history museum in its own wing behind the building, is free, needs no booking, and opens Wednesday to Sunday, 10am to 6pm, last entry 5:30pm. Touring the palace itself, the working seat of Argentina’s government, is also free but runs on reservation only through the palace’s own booking site, passport in hand, and the schedule is narrower and less predictable than the museum’s, with English-language slots typically limited to weekends.

Between those two and the Metropolitan Cathedral and Cabildo covered in the main Buenos Aires guide, Wednesday, Thursday or Friday is the only stretch of the week when all four buildings around this square have at least some door open, weekday for the bank, and the cathedral is the one constant that’s open daily regardless.

Avenida de Mayo runs straight to the airport shuttle terminal

Under a kilometre and a half separates the square from Terminal Pellegrini, west along Avenida de Mayo and across to Diagonal Norte, and it is flat the whole way: fifteen to twenty minutes on foot, no subte and no bus. From Terminal Pellegrini at Pellegrini 971, Tienda León’s express minibus leaves roughly hourly for the hour-long run out to Ministro Pistarini International Airport (EZE). No rail line reaches the airport itself, so the shuttle or a taxi covers that last stretch regardless of how you got across town, but starting from Plaza de Mayo, the walk itself is the whole trip.