Plaza de Mayo , declared National Historical Place , it has been nucleus of important historical episodes for example the first step to independence in 1810, the public oath of the 1860 constitution, among others. Its history begins when is designated public seat, by Juan de Garay when he assigned the block that is in front of the Cabildo for this destiny. Originally the block had been occupied by the jesuitas until 1661, but all their constructions were demolished.

Since 1803 one recova located in the current Defensa street, destined to Market was divided in two sectors known as Plaza Mayor (then Plaza de la Victoria) and Plaza del Fuerte (then Plaza del Mercado and then 25 de Mayo).

Plaza de Mayo received many changes, but the most important one, was in 1900, when the seat was “decorated” with trees , palms of Rio de Janeiro, etc. by Carlos Thays, the one who designed in 1902 el Parque de la Independencia, in the city of Rosario(province of Santa Fe).

In tha Seat and its immediate outskirts, you can visit:

Pyramid of May (Pirámide de Mayo) - National Historical Monument : Located in the center of the old Seat of La Victoria . Originally it was an obelisco constructed in 1811 for the first anniversary of the Revolution of May. Later, this one was covered in 1856 by the present pyramid (work of Prilidiano Pueyrredón).

Statue of Belgrano : It is work of the sculptor Albert Carrier-Belleuse, author of the Mausoleum of General San Martín in the Cathedral, and argentinean Manuel Santa Coloma, who carved the bronze horse. Inaugurated in 1873.

Metropolitan Cathedral (Catedral Metropolitana) - National Historical Monument (on Rivadavia street ) It is the oldest catholic temple of the city. It was located in the lot for the Iglesia Mayor in the second foundation of the city in charge of Juan de Garay. Since the first chapel of marinates from 1593 to the present Cathedral, were in this site six different buildings that they acted as a greater temple. The present church was completed between 1752 and 1852. The twelve columns of their facade represent the apostles of Jesus. In its interior there is a mausoleum of marble that lodges the tomb of General Jose de San Martín ( National Historical Monument ),and next to him generals Tomás Guido and Gregorio de las Heras and the symbolic Soldado Desconocido de la Independencia. (unknown Soldier of Independence ) The first of these, it has a guard of grenadiers. The entrance for guide visits is by 27 San Martín street .

Cabildo - National Historical Monument : ( 65 Bolivar street ) Its building dates from 1940, when it was recovered by architect Mario Buschiazzo. It was the Maxim authority of the city from 1580 to 1821 The first Cabildo, from precarious construction, dates of 1610. Between 1725 and 1786 was constructed, under the direction of the jesuita Giovanni Bianchi, a building of two floors with balcony and one tower, including the Capitular room , a chapel, offices of judges, public notary, and cells for prisoners. But the principals changes are between 1880 and 1889, that agreed with the urban layout, that's why the building lost its tower, numerous arcs and their original style. It is host of the National Historical Museum of the Cabildo of Buenos Aires city and the Revolution of May, where objects are exhibited, picture, arms and furniture relate with important persons of the Revolution. In the yard works a fair.

House of Culture (Casa de Cultura) :(opposed to the Cabildo on 567 avenue of Mayo) It was the building of La Prensa newspaper, its founder Jose C. Paz had bought it in 1894. At the moment it is host of the Culture House of the Secretary of the Government of the city of Buenos Aires (Casa de la Cultura de la Secretaría de Gobierno de la Ciudad de Buenos Aires)

Government Palace of Buenos Aires (Palacio de Govierno de Buenos Aires ) : (bordering with the House of culture, Bolivar street ) Building that was projected by the architect Juan Buschiazzo and constructed by the Italian Giovanni Cagnoni between 1891 and 1902. In the lot of the Government Palace it was the house of Pedro Duval, dealer of slaves. It was expropriated , and in 1818 was donated to general San Martín, who never got to occupy it.

House of Government (Casa de Gobierno) - National Historical Monument : ( 50 Balcarce street ) Is known as the Pink House (Casa Rosada) and is host of the Presidency of the Nation. It is located where originally was the old fort of Don Juan Baltasar de Austria. Since the presidency of Sarmiento in 1868, its was host of the Executive authority of that time date. The gardens and the color from its walls, have given it the name of Pink House. Its name, and therefore its color, a rose from a lime mixture with blood and tallow of bovines to waterproof the facade of the old refuge. In 1882, the argentine president Julio Roca, ordered the demolition of the last rest of the fort and the construction of a building similar to the Post office and Telegraphs which was in the corner of Balcarce and Hipólito Irigoyen since 1878, designed by Swedish architects. The alley that saved both bodies was saved in 1885 with an arc that frames the main porch today. This work, in which painter Prilidiano Pueyrredón collaborated, was completed with luxurious halls with floors of marble and mosaics, stairs and frisos of white marble.

From the construction stands out the Balcony, that begins its history with the first appearance of Julio A. Roca August 12th of 1901, the Arc, that united both primitive buildings,and South Facade, that was demolished in 1938 breaking the symmetry of the front of the palace.

In its interior stand out the White Hall, where take place the ceremonies of assumption of the presidential control and oath of ministers and Secretaries of State, and the yard of the Palms, the main space opened in the interior of the presidential palace; there is also busts, stairs and inner yards.

Since 1957 lodges the Museum of the Pink House, in where are exhibited belongins of the presidents and the patrimony of the governmental seat. Also in the visits is possible to access to the vaults and arcs of the Aduana de Taylor, constructed in 1855. Entrance at 219 Hipólito Irigoyen street .

In 11de Junio of 1580 Square (between Rivadavia street and L. N. Alem avenue ) it is the bronze monument tribute to Juan de Garay. Work of the german artist Gustav Eerlein. It represents the moment of the foundation, and was located near the site in which this event took place . In the same place,stood a sprout of the oak of Guernica , symbol of the Vasco town.

Legislature of Buenos Aires (legislatura de Buenos Aires ) :( 575 Julio A. Roca street) The building was inaugurated in 1931, and build by architect Héctor Ayerza who counted with the collaboration of colleague Edouard Lemonnier. Stands out in the construction a tower with viewpoint of 95 meters of height, five bells, and a clock of four quadrants. A remarkable german carillon has also 30 bells that vary of weight. In its interior, there are some important spots, such as the Stairs of Honor, that allows the access to the Golden Hall, a retort of the Hall of the Mirrors of the Palace of Versailles in France ,and the Esteban Echeverria library hall. On the Roca avenue , in the front, a series of 26 statues symbolizes diverse elements related to the government of the city.

Old Congress: (139 Balcarce street) In this site, that was before a market of meats and later the quarter of the Patricios Regiment, the National Congress developed its sessions between 1864 and 1905. Of the old house that was constructed for this aim, it conserves the room of sessions, the lobby from entrance to the building, with its columns, a forged iron grate and the original furniture of that time. At the moment works the National Academy of History.

Nation bank (Banco Nación): ( 205 Rivadavia street ) Here between the 1857 and 1888 worked the first bank.

Colón Theatre (Teatro Colón) : This building was projected by Alejandro Bustillo, constructed between 1940 and 1955, after acquiring by stages all lands of the block. It lodges the Historical Museum of the Bank of the Argentina Nation (Banco de la Nación Argentina ), entrance 206 Bartolomé Mitre street .