Paul White / AP

A technician works as a camera mounted on a mobile robot-like structure moves across Pablo Picasso's 'Guernica' painting at the Reina Sofia Museum in Madrid on Feb. 21, 2012.

Paul White / AP

A technician looks at images on a screen as a camera moves across the painting.

Every night after Madrid's Reina Sofia museum shuts its doors, a giant robotic machine is dragged out to resume a painstaking examination of one of the world's most iconic paintings. 

Pablo Picasso's masterpiece "Guernica" is getting a full health check as it marks its 75th anniversary.

The machine — dubbed 'Pablito' — is taking tens of thousands of microscopic shots of the 291-sq. foot painting to allow experts to penetrate the work like never before and see its real condition after a hectic life traveling the globe. 

— Read the full report by The Associated Press.