Interior Space and Exhibition Design Regnum Carya Lobby by Arketipo Design The location of the hotel is the first inspirational part of the design process. It is located in between the blue Mediterranean sea and very green golf club space. So, the nature, natural forms and surfaces, pattern and textures are the main element of concept design. In addition to this, the meaning of carya is the second element of conceptual approach to the project. The mythological mean of carya refers to Carya Illinoinensis, the name of a walnut.