As we have detailed on this site, many important Christian sites were built upon pagan sites in acts of spiritual and cultural genocide. In fact, this site first popularised the term "cultural genocide" to refer to this process.
Here are some examples of Christian sites built upon pagan ones:
The Pagan Sites of Europe Remembered: (11) Donar's Oak, Geismar, Germany
The Pagan Sites of Europe Remembered (13): Goodmanham, Yorkshire
The Pagan Sites of Europe Remembered (29): The Cathedral of Milan
Having recognized this fact -- and also noting the rapid decline of Christianity for various reasons -- the question arises: Is now a good time for some of the Pagan sites to be restored?