The aim of this paper is to discuss the role three-dimensional models play in addressing performance issues in virtual reconstructions of the heritage buildings. Heritage visualisation is considered here as a process of representing knowledge about space, time, behaviour, light, and other elements that constitute cultural environments. The author aims to analyse the process of digital reconstruction of heritage buildings and the impact of the decisions taken during its development on the final performance. Based on the examples drawn from practice, various stages of development are discussed, confronted with the principles of London Charter.