The Symbiotic House designed in BXB Studio recognized as the most ecological building of the year 2019 according to PLGBC, is a house in which ecological elements accompanied a contemporary architectural block. The Cave House - is a building whose unique and innovative design is a derivative of ecological functional and spatial ideas and the principles of the so-called human-centered biophilic design, i.e. architecture focused on human health and well-being. These two issues - modern design and eco elements become an inseparable, coherent unity here.