My research interests focus on understanding, planning for, and managing tourists and visitors in heritage and natural sites. Recent research has focused on understanding tourists’ experience at World Heritage Sites, crowding and carrying capacity in heritage sites, and value orientations and heritage tourism management. Methods, tools, and concepts used in this research include normative theory, indicator and standards–based management frameworks (e.g., Visitor Experience and Resource Protection [VERP], Limits of Acceptable Change [LAC], and Visitor Impact Management [VIM] frameworks), visual simulations, surveys, and qualitative research techniques.