4D content is a diachronic tool that allows users to visually understand the evolution of a space or building. In other words, it consists of several 3D reconstructions of a building, each showing the state of the building at a specific point in time. This type of content can be displayed in three different ways:

• Augmented Reality
• 3D model using a 3D viewer
• Video render, which can be enriched with explanatory texts and voiceovers.
• It is an ideal interactive resource for heritage, cultural and historical spaces.