With the shift towards a digital economy, the demand for ICT-capacity is growing fast. The fundamental node of this infrastructure is the datacenter. With the idea of the ´smart city´ as a future perspective, the question rises how the physical manifestation of the data center should be in the built environment. But, as important, how it could work together in energetic synergy with other functions or buildings. This thesis explores a synergy between a datacenter and hotspring. By combining two functions that seemingly have nothing in common, a new typology is created with added value. The data center is cooled by the hotspring and the hotspring is heated by the datacenter. The hotspring replaces the cooling tower, residual heat is utilized and a unique place for recreation is created within the cooling system of the datacenter.