The Ukrainian Greek-Catholic Church belongs to the complex of buildings which is situated in the block No 8 in the Old Town. This block is situated between town‘s wall and the Lai street and extends from the Suurtüki (Cannon) street till the Hobuveski (Horse mill) street. Reconstructed in 1997-2000 under the custody of the apostolic nuncios archbishop Justo Mullor García and archbishop Erwin Josef Ender.

The Ukrainian Greek Catholic Church is the largest Eastern Catholic Church in the world. As of 2019, it had approximately 4.1 million members The church has followed the spread of the Ukrainian diaspora and has some 40 hierarchs in over a dozen countries on four continents, including three other metropolitan bishops in Poland, the United States, and Canada. The Church in the diaspora including the United States and Canada is largely multi-ethnic.