X-ray and infrared imaging has revealed a long-hidden painting beneath "Portrait of Mateu Fernández de Soto," providing ...

Archaeologists are still unraveling the mysteries of an unusual burial site in Dijon, France, which dates to between 450 and ...

Irregular polygons are shapes that have sides and angles of different sizes. You can always identify the polygon by how many sides it has. For example a pentagon is always a shape that has 5 sides.

Conservators discovered a portrait of a missing woman beneath one of Picasso's earliest Blue Period paintings.