It's Sunday and so I have searched long and hard for a worthy church site. Many churches and cathedrals have "virtual tours," but the photos or QTVR's tend to be smallish and therefore not truly inspiring.
This, however, is quite spectacular -- Milan Cathedral (Duomo), at the Arounder site. There are nine views in all, three of the exterior and six of the interior. The interior shots are much superior to the others. Several of them come with gorgeous organ music, sometimes even with Gregorian Chant. I tell you -- not to be missed!
For days I have been struggling, unsuccessfully, to put together a page on Reims Cathedral, France. Until such time as I might succeed in that, I offer this page of wonderful photographs on the broader topic of Gothic cathedrals in general.