The birth of a joint project


Klaus Oppermann
1976 - 2018


Klaus was a carpenter and had a great passion for the mountains, he loved mountain-climbing - especially in the Dolomites. His appreciation for beauty and nature made him fall in love with this valley and above all with this house in Cavalese.

Being also a naturopath he had studied the relation between health and harmonious architectural forms, and  therefrom conceived and created the interiors of the Casa Gialla with Cornelia. He has designed furniture and architectural forms that can still be found in the house.

According to his ideal, the Casa Gialla should be a place where people can meet in a free and authentical way, he wanted to promote cultural meetings in the real sense of the word: where mutual respect and interest in each other open new horizons…

Klaus had studied philosophy and cultural sciences in Berlin and then deepened this path by individual research for the rest of his regrettably short life.
This house, however, will always be his own and the activities taking place in it will be held in the spirit of his ideal.


Cornelia Oppermann


was born in 1977 in Munich (Germany). She has studied at Mount Allison University and Concordia University in Eastern Canada (B.A. of Arts, major in visual arts/photography; minor in literature). After her studies in Canada, she trained as a naturopath in Berlin, Germany. She completed her training to become a yoga teacher at the Sivananda Yoga Camp in Val Morin (Québec/Canada).

Cornelia has been teaching yoga since 2006, at first in her own private studios in Berlin and Tübingen, then in public spaces for adult education in Germany, like the University of Stuttgart.

Since 2016 she has been collaborating with the Eco Park Hotel Azalea and occasionally with other local associations and initiatives of the Fiemme Valley. She teaches in her yoga studio at Casa Gialla since 2016.

My aim is creating regenerating moments and atmospheres where one can find new perspectives for every day life, releasing oneself one moment from the weight of the daily grind in order to appreciate the beauty of nature and the world, and their mysterious and unknown dimensions. Going in search of these dimensions makes us find a new, fresher and healthier outlook on life. This is the experience which i would like to share.

Harmonizing architectural forms

The harmony of a home mostly springs from its atmosfere, but also from the interior design and inner architectural forms. The „Casa Gialla“ was conceived and constructed by the architect Giampiero Vinante of Cavalese starting from 2004. When we found it, it was love at first sight: Its dimensions seemed to us perfectly harmonious. Its large window fronts are orientated towards east, south and west, therefore the light warms and illuminates the rooms and caresses its forms all day long. We were inspired to complement this beautiful house with our ideas of harmonizing architectural forms, which was also an expertise and a great passion of Klaus.

So he began to calculate its dimensions beginning from the circumference around the rectangular outline of the building. From this surrounding circle he developed all other dimensions (for example for the furniture): By dividing its diameter in half he found another measure which was still in relation with the whole length as well as with the entire building. He also drew the inside circle of the rectangular outline, which resulted in a smaller circle still in relation to the whole.
Beyond that he constructed an imaginary cone above the circular outline. One can cut this cone at any level and thus get an abundance of measures that are in harmony with the house dimensions (conic section). A great spectrum of geometrical forms opens up, like, for example, the oval form of our art-table in the pink room.

By deriving the measures of the entire interior design - including the furniture - from this ground circle, Klaus created harmonious relations form one aspect to the whole of the house. According to the spiritual research of Rudolf Steiner, the corresponding of one form to another through their dimensions will give a sense of inward logic that makes us feel in harmony. We will perceive this harmony even though this „imaginary calculation“ is a subconscious process.

The effect of harmonically relating architectural forms on the soul, as well as on health in general, is considerable. The „golden section“ is a relation found in the pentagram. It can also be found in the human body, where the upper and lower parts of the extremities, divided by the joints, are always in this harmonious ratio (e.g. upper arm and forearm or thigh and calf). The golden section was known, documented and applied (in Mathematics and Architecture) as far back as in the time of the ancient Greeks (Euclid of Alessandria), later it was reported of it in the times of the Renaissance by Luca Pacioli and Johannes Keppler.