Southern Europe is experiencing one of its worst wildfire seasons in two decades, with Spain among the hardest-hit countries.

Firefighters in Spain, Portugal and Greece battled ongoing wildfires Friday, an important religious holiday in all three countries, as persistent hot, dry conditions challenged efforts to contain the blazes.

Firefighters in Spain continued to battle major forest fires in at least 16 locations on Friday, as the country reels from one of its most devastating summers yet, according to the Interior Ministry.