Cities Connection Project (CCP) was born with the aim to establish a network of cultural connections between Barcelona and other European cities with an important architectural tradition. A series of architecture exhibitions are the focus of this project that also offers other events such as conferences, meetings among universities, and the desire to create synergies among the professional teams involved. Barcelona has become a worldwide recognized brand, in wich architecture and urbanism have played a key role. One of the main elements of the “Barcelona Model” is the quality of public space, and this reason has impulsed Open Space Connection (OSC), a branch of CCP, but focused in the field of public spaces in metropolitan areas. Through the first edition of Open Space Connection, the curators aim to open the reflection about two differents methodologies of thinking public spaces and landscape architecture: one of them in the the French Swiss Region of Lake Leman and the other one in the Barcelona Metropolitan Area.