Walk from Plaza de Mayo towards Congress. Stop at Café Tortoni, Palacio Barolo and 36 Billares along the way. If you've booked a guided tour, build the rest of the walk around that time.
First stop · Plaza de Mayo
Find the Casa Rosada, the cathedral and the Cabildo from the square. Take in the ensemble before heading west.
Second stop · Coffee and architecture
Stop at Café Tortoni, then continue to Palacio Barolo. If you want a timed tour, book it before choosing when to stop for coffee.
Tercera parada · Congreso
Finish your walk near Congress. If the weather changes, 36 Billares offers a sheltered stop on the same avenue.