I hope to add more data layers in the future. For now, this is a basic map of the Eastern Catholic Church seats. Click on a cross icon to see dates established, members, and other information.

The data came from this Wikipedia page (which says it is from 2010, meaning nearly a decade old). I put it into a table and assigned Latitude and Longitude based on the historic seats of the various Eastern Catholic Churches. In total, there were 17,796,273 Eastern Catholics (again, as of 2010… the current numbers may be higher or lower).