The book is dedicated to historical gardens seen from a multidisciplinary perspective: landscape architecture, architecture, urban planning, art history, geoscience, digital methods, bibiotheconomy etc.. Outgoing point was a research about the gardens of the counts Károlyi, a noble family with headquarters close of the three country corner Romania-Hungary-Ukraine but properties also in Slovakia and having an architect who was landscape architect in Austria. The introduction shows an overview of the research programmes in frame of which it was performed and of the results. Because the second part of the research on Károlyi heritage was performed during the pandemic, instead of field trips specialist opinions were invited resulting in this book. The conclusions show how green spaces in itself are not only subject of study during the pandemic but also a factor to cope with it. The main body is structured into a feature paper on the Károlyi heritage in Slovakia as well as interviews from Romania and abroad structured around the contemporary challenges in the heritage, landscape and restoration of historical gardens. The invited specialists answered the same 5 questions. Three of them also visited other Károlyi gardens, two of them on the purpose of intervention. The book includes images and plans of gardens across Europe including Romania, Italy, Hungary, Germany, the Netherlands apart of Slovakia. Also methodological approaches are included