An idol of ancient Slavic deity of Swietowit was found at Lopushnia.
During the First World War, there was a front line in Lopushnia and the surrounding areas.
As a result, there are numerous trenches and bomb holes in the local forests.
There is a significant community of deported Ukrainians from south-east Poland (Lemkovyna and Nadsannia / Upper San valley) residing in Lopushnia.
A monument commemorating this event (with the names of deportees and their original villages) has been erected next to the new church in Lopushnia.