The Pirámide de Mayo
(Spanish pronunciation: [piˈɾamiðe ðe ˈmaʝo]
, May Pyramid
), located at the hub of the Plaza de Mayo
, is the oldest national monument in the City of Buenos Aires
. Its construction was ordered in 1811 by the Primera Junta
to celebrate the first anniversary of the May Revolution
. It was renovated in 1856, under the direction of Prilidiano Pueyrredón
. In 1912, after having undergone many modifications, it was moved 63 metres (68.9 yards) to the east, with the idea that a much larger monument would eventually be constructed around it.
The monument is crowned by an allegory of Liberty, the work of the French sculptor Joseph Dubourdieu. From the ground to the peak of the statue's Phrygian cap, the Pyramid measures 18.76 metres (61.5 feet).
In 1906, with a few years until the centenary of the May Revolution, plans were put forward for the relocation to the center of the Plaza de Mayo. This was not realized until 1912. After the marble statues had been removed, the Pyramid was enclosed with wood for protection. Two rails were laid, four metres apart, supported by masonry pillars that could support a weight of 225 metric tons. Under the Pyramid was a cement platform resting on solid wheels. Between the 12th and 20 November, the Pyramid was pulled 63.17 metres with a winch. A metal time capsule containing information about the relocation was buried under the Pyramid's new foundation.