The town contains a museum, a rathaus, a bierstube and a cemetery that contains the grave of Los Paraguayos singer Luis Alberto del Paraná.
More Germans came from Tanganyika and the Sudetenland after the First World War, though the town was renamed after General Bernardino Caballero, president of Paraguay from 1880 to 1886.
The Lake Hotel in San Bernardino was where the German nationalist Dr. Bernhard Förster spent the last six weeks of his life, before committing suicide on 3 June 1889 by taking an overdose of strychnine.
Their efforts, at a site called Nueva Germania, failed dismally causing Förster to leave for San Bernardino.
In 1934, Adolf Hitler ordered a small memorial service to take place at his graveside, with German soil sent to sprinkle over the grave.