Thousands of Spaniards evacuated during massive wildfires started to return home on Wednesday as the government said it was working to contain some of the worst forest fires in the country's modern history.

Spanish firefighters on Sunday battled a new front of fires near the coastal city of Valencia, where at least 15,000 people were evacuated.

More than 300,000 people have fled their homes or holiday accommodation as major wildfires continue to spread across France and Spain, prompting one of the largest civilian…