A widespread power outage hit Spain and Portugal, affecting millions of people who live across Europe's Iberian Peninsula.

Before dawn, power was gradually returning to several regions across Spain and Portugal as the nations reeled from the still-unexplained widespread blackout that had turned airports and train stations into campgrounds for stranded travelers.

Power and cell phone outages struck across the Iberian Peninsula and other portions of Europe Monday, with disruptions reported in Spain, Portugal, Belgium, Andorra and France.