SmartSquare - an interdisciplinary guided tour of an urban testbed SmartSquare is an urban testbed in the emerging domain of “Smart Culture in Smart Cities”. The square is the so-called Domplatz (Cathedral Square), the location of the founding fortification Hammaburg, in the inner city of Hamburg, Germany. SmartSquare is a “Smart Service City” project with multiple-stakeholder perspectives on the activation of this culturally significant inner-city square by means of digital cultural storytelling, data analytics, simulation and service innovation. SmartSquare is a joint project of HafenCity University and the Archaeological Museum Hamburg in cooperation with the digital cluster Hamburg@Work. Funded by the German Federal Ministry for Education and Research (BMBF).