NTRODUCTION
As tourists we are often exposed to unfamiliar environments where the fast retrieval of information isfundamental for our decision-making. Access to relevantcontent through location-based services not only facilitatesthis process but also changes the way we perceivedestinations, creating more memorable and uniqueexperiences [1]. Augmented Reality (AR) browsers deliver information about physical objects through spatiallyregistered virtual annotations [2] and can function as aninterface to (geo)spatial and attribute data. Suchapplications have considerable potential for tourism [2, 3].There are documented studies already discussing theoptimal placement [4] and layout [5] of AR content.Results, however, do not scale well to the domain of urbantourism, because: 1) in any urban destination, many objectscan be augmented with information; 2) each object can be asource of a substantial amount of information; 3) theincoming video feed is visually heterogeneous andcomplex; 4) the target user group is in an unfamiliar environment; 5) tourists have information needs whichdiffer from those of urban residents. The key objectives of our research are to investigate, empirically, the problemstourists experience with AR annotations and to proposemeaningful ways to improve their design