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Felspar, quartz and mica – the main mineral components that make up granite and another type of rock: gneiss. Even though it was used to construct some of Switzerland’s famous buildings, gneiss is relatively unknown compared to granite or marble. Read more
50 years ago, on 16 September 1966, the new Metropolitan Opera opened in New York City. The building on the Upper West Side of Manhattan is part of the Lincoln Center for the Performing Arts. The non-profit organization promoting music, dance and Read more
Eine böse Weihnachtsüberraschung steckte am 24. Dezember 1938 im Briefkasten von Hans Bernoulli, Titularprofessor für Städtebau an der ETH. Read more