London's Tate Modern unveiled a huge, spectacular abstract painting by acclaimed US artist Joan Mitchell on Thursday, part of one of the "most significant gifts" to the gallery in recent decades.

More than a century ago, Pablo Picasso smashed the Sacre-Coeur Basilica in Paris into a web of tangled lines on his canvas, deconstructing reality with the brushstrokes of a master cubist.

Tourists and French visitors alike filled Paris's landmark Pompidou museum on the weekend to catch a last glimpse of its prestigious art collection ahead of a five-year closure for a major renovation.