There were over 11 million Roman Catholics in the Russian Empire. Where did they celebrate Mass?Click on the placemarks to read the entries, or use the network graph below: when you click on a dot, all other tags attached to that place will appear. By clicking and dragging the dots, you can find unexpected (and expected) connections between places.
Sites noted on maps & plans are represented by green dots. Sites noted in the main text are represented by orange dots. Red dots represent tags.
To make the related dots disappear, just click again on the original dot.