[4] With the rise of Nazism in Germany, Nazi agents started active propaganda work among the ethnic Germans living in Argentina, with Nazi-organized meetings reportedly held as early as 1933.

The pro-Nazi-Germany atmosphere in some small, predominantly German communities of the northeast was so intense during WWII, that some Argentine officials who visited such towns reported that they could hardly feel themselves to still be in Argentina.

However, Germans traditionally consider themselves to have a Special Relationship to Argentina and Chile, two countries maintaining an unabated state of friendship in good and bad times.

Those who lived in Argentina included Adolf Eichmann, Josef Mengele, Aribert Heim, Eduard Roschmann and "Bubi" Ludolf von Alvensleben.

The Legislature of La Plata (1882) was designed by Gustav Heine and Georg Hagemann (architects from Hannover), to manage the site, sent Carlos Nordmann to Argentina.

Market Fruits of Avellaneda (152,000 meters square ), the largest wool- stock of the world, was built by German Fernando Moog, the same who later also designed the Odeon Theatre.

The Palace of Justice in La Plata was designed by Adolph Büttner, the Caraffa Fine Arts Museum of Cordoba was built by Juan Kronfuss and military facilities Campo de Mayo were built by the company Siemens Bauunion, like building State phones (Corrientes and Maipu, Buenos Aires).

Passage Siemens, with access to the Avenida de Mayo, is a design by Hans Hertlein, while the Subway " A" ( 1913 ), the General Guemes Gallery ( 1915 ), the Central Post Office (1915), the refrigerator Armour La Plata (1916), the Colegio Nacional de Buenos Aires (1918 onwards), the Superior School of Commerce Carlos Pellegrini, the plant CADE Puerto Nuevo ( 925) and the Obelisk of Buenos Aires (1936) are works of the German company GEOPÉ, which German director was John Hartmann.