His elegant buildings received high praise in Germany and Europe and his German pavilion of the Expo 58 in Brussels, built together with Egon Eiermann, achieved worldwide recognition.
He attended the Interbau 1957 in Berlin-Hansaviertel and was one of the three architects who had the top secret order to create the governmental buildings in the new capital city of the Federal Republic of Germany, Bonn.
He was a Roman Catholic and joined the boy scouts, where he met friends he had for his lifetime: Golo Mann, the son of the famous German writer and Nobel laureate in literature Thomas Mann and the later physicist and Nobel Prize laureate Werner Heisenberg.
[2] During this time he met his later fiancée, Aloisia Ruf, née Mayer, born in Munich, 2 April 1910, a daughter of a factory owner.
Ruf loved to travel and he visited Austria, Italy, Greece, France, Belgium, Switzerland, the United States and Norway.
He became friend with many artists like Marino Marini and Bruno Pulga and had guests in Italy such as Henry Moore.
He also kept in touch with Walter Gropius, Ludwig Mies van der Rohe, Richard Neutra and Romano Guardini.
From 1936-1938 he was ordered to build parts of the Werdenfels and the Kemmel barracks in Murnau, after the war they were used by the US army and German troops.
From 1934 to 1936, one year before his death, Junkers had allowed the 26-year-old architect to build an estate for his workers in Grünwald, Bavaria.
Hugo Junkers, who had lost nearly all of his inventions and his factory in Dessau to the new authorities and now lived near Munich under surveillance, now did research for metal-housing.
[8][9] They also built the residential estates of Plittersdorf, Tannenbusch and Muffendorf, where the German and American staff lived.
Ruf and Egon Eiermann made plans for the German pavilion and it was decided they should work together.
They decided to build eight glass-pavilions that were connected with open pathways, like Ruf had designed for the Academy of Fine Arts, Nuremberg.
In a park beside the river Rhine he built a flat-roofed house with large glass-windows, that should show the open democratic way, the new Germany was thinking.
Ludwig Erhard[19] and Helmut Schmidt liked and used the modern building, whereas Willy Brandt, who had young children, used it for state visitors, preferring to remain in his private residence.
[22] Ruf realized a lot of buildings in Bonn, for example the Federal Ministry of Food, Agriculture and Consumer Protection[8] and the addition to Haus Carstanjen, the former Federal Ministry of Finance (Germany), today the UNFCCC of the United Nations Framework Convention on Climate Change,[23] is part of the UN-Campus.
[24] 2014 the Chancellor's Bungalow was the central part of the German contribution at the 14th International Architecture Exhibition in Venice.
[25] Ruf made development plans for the cities, of Nuremberg, Munich, Fulda and Bonn.
[26] In 1852 Hans von und zu Aufseß had the idea to realize a museum for a "well-ordered compendium of all available source material for German history, literature and art".
The legal deposit law has been in force since 1663, regulating that two copies of every printed work published in Bavaria have to be submitted to the Bayerische Staatsbibliothek.
[28] 1953-1966 the professors Hans Döllgast and Ruf had to plan and realized the reconstruction of the eastern wing, a new area behind historic walls, and the extension building of the Bavarian State Library, a glass-steel frame construction for the bibliotheca.
On the area of the Hansaviertel 53 architects from 13 countries made 35 drafts, that were realized by Alvar Aalto, Paul Baumgarten, Egon Eiermann, Walter Gropius, Arne Jacobsen, Oscar Niemeyer, Max Taut, Pierre Vargo and Ruf and others.
1160 living quarters, tower buildings and flat roofed houses, churches, cinema, library, kindergarten and a subway station.
Walter Rossow, a landscape gardener from Berlin planned with a team the green areas.
Ruf formed the Tucherpark [de], named after Hans Christoph Freiherr von Tucher (1904-1968), lawyer, executive spokesman of the Bayerischen Vereinsbank.
His wooden furniture also begins as natural country style, with a modern and very simple way, as well as his representative tables for bureaus and living with chrome, wood and glass.
The oeuvre of Ruf lead onto several academic studies and presentations about his buildings and his life and work in Germany,[37][38] Switzerland,[39] Italy and the US.