Photos Show the Destruction in France and Spain From Ferocious European Wildfires

The fire in Landes is now under control, Macron said, but he warned it "remains virulent" and urged extreme caution over the coming days.

"Our country is going through an unprecedented fire season: 116,085 hectares have already burned and 13,566 fire starts have been recorded since January," France’s Prime Minister Sébastien Lecornu said on Monday. (116,000 hectares is roughly 287,000 acres.)

In Spain, officials fighting the blazes near Madrid say they are the worst the region has ever experienced. Firefighters are also battling a wildfire in Castellón, a province near Valencia.

More than 100,000 people have been ordered to evacuate their homes or take shelter as emergency services attempt to get the flames under control in the face of changing winds.

Spanish Prime Minister Pedro Sánchez told reporters Tuesday that the authorities "can begin to see the light at the end of the tunnel" in the fight against the wildfires, but he expressed concern about the approaching heat wave.