In Paris, blistering heat led the Eiffel Tower to close its summit and remind prospective visitors to take precautions. In London, the Wimbledon tennis tournament saw its hottest opening day on record,

The worst heat was felt in southern Europe, while punishing temperatures were forecast to reach 104 degrees Fahrenheit in Paris and remain unusually high in Belgium and the Netherlands.

PARIS (AP) — Barcelona recorded its hottest June in over a century, the summit of Paris’ iconic Eiffel Tower was closed to visitors and hundreds of French schools shut on Tuesday as Europe sizzled in its first major heat wave of the summer.