A set of mysterious grooves on a cave floor in France has turned out to be far more than abstract art. Archaeologists now argue that the engravings form the world’s oldest known three-dimensional map, ...

PALERMO, Italy — Mario Merz is one of a few artists whose work can fill out the 17,000-square-foot hangar occupied by ZACentrale, Palermo’s newest contemporary arts center. For its most recent ...