Conceptualisation of information allows improved visualisation and manipulation of large amounts of data. Especially in digitisation of cultural heritage and when aiming at presenting more than one monuments, abstraction of information becomes the key solution. Our proposed application aims to present the main archaeological monuments of Crete through a conceptual 3D model and their evolution through time. The technical implementation is based on WebGL allowing the user to navigate among the main monuments and approach them gradually and interactively through different levels of detail. Furthermore, the ability to switch between the seven historical periods offers a comparative study of their evolution in time. Conceptualisation and abstraction of information through varied levels of detail allows the application to be available to anyone on the web, being computationally light and easy to use.