No stone is like another. That is why all 137 steel windows in the "Messner Mountain Museum" at Sigmundskron Castle have different dimensions. Countless detailed solutions were required: whether for the installation of entire storeys, the measurement of small metal rods or the stabilisation of a floating cinema auditorium – we found them all. Now an outstanding architecture of glass and steel is nestling against the age-old building fabric. A lasting connection, because there is no metal element like the other. The museum's architect, Werner Tscholl, was awarded the prestigious "Architetto Italiano 2016" prize in the course of this construction.