A masterpiece by Spanish painter Diego Velázquez depicting Queen Isabel appears to have vanished for a second time after being mysteriously withdrawn from an upcoming auction.
The museum has created a team to research the doubtful origins of some of its works, while creating new forms of collaborating with countries whose pieces are in dispute
Read our Telegraph Travel expert guide to Seville, including the best places to stay, eat, and drink as well as the top things to do, and all of the information that you need to know before you go.