Over 100 firefighters on Thursday tackled a blaze at the Cite des Sciences, one of the biggest science museums in Europe, here a media report said.
Around 30 fire trucks and 120 firefighters were sent to tackle the blaze, which broke out before dawn in an empty museum building that was being decorated. The blaze was under control at around 7.30 a.m., The Local news portal reported.
The fire occurred in a 10,000-sq.m cube that was being fitted and was due to open on October 15.
"We don't know the exact extent of the damage yet... but we know the our newest exhibition has been hit. We just don't know how bad yet," a museum staffer said.
The cause of the blaze is not yet known and no reports of any casualties or injuries have been reported yet.
The Cite des Sciences is located in northeastern Paris in the Parc de Villette.
The museum comprises four huge cube-shaped buildings.