Europe's scorching early-summer heatwave is beginning to take a toll on some of the continent's biggest tourist attractions, with landmark sites, museums and outdoor spectacles forced to close, shorten opening hours or cancel events as temperatures soar.

From the Eiffel Tower and the Louvre in Paris to Buckingham Palace's Changing of the Guard in London, authorities are taking precautionary measures to protect visitors, staff and performers as record-breaking heat spreads across Europe.

Paris closes some of its most iconic attractions

France is suffering a severe heatwave, which has been ongoing since last week.

On Tuesday, the country experienced its hottest June day since records began, with an average temperature of 29.8C recorded, and highs in the 40s.