This thesis attempts to introduce tranquility as a spatial concept and to develop first hypotheses into its application within Urban Studies by the application of an experiential theoretical and methodological framework. In order to comply with this objective, three existing fields of research (Restorative Environments, Calm Technology, Stillness) are presented as orientating spatial notions that are akin to tranquility. Subsequently, the research field around atmospheres is introduced as a theoretical and a methodological framework working at the grounds of the executed investigations. These took place in two places within Malmö: a silent after-work concept called Tyst Off the Work and a resting room, referred to as Vilrum, in one of the buildings of Malmö University. Autoethnographical accounts of the two cases are brought forward in the form of micrologies and subsequently interpreted. The thesis concludes with three hypotheses about the rationale around tranquility in the investigated cases: the understanding of tranquility as a rest between productive action, the affective impact of the public-private setting as exclusive, and a tendency towards standardized notions of tranquility.