Archaeoastronomical research often suffers fromlack of data about the three-dimensional situation of prehistoricalmonuments in their respective landscapes. In our project, wehave reconstructed, in virtual models, a series of similar Neolithicmonuments with alleged astronomical orientation pattern in theirrespective landscape. Astronomical extensions to the modellingsoftware and to the models, or the direct inclusion of the modelsinto desktop astronomy software, opens up valuable insights intotopics long debated only on flat paper maps.