Future of ArtPrize, the biggest contemporary art contest in the US, uncertain after board disbands

The hugely popular contest also awarded major monies, with the winning artist taking home $250,000 most years

Artist Wim Delvoye enters design competition to reconstruct Notre Dame

The Belgian, known for his sculptures in a Northern European Gothic style, is already devising a new spire

Criticism for Prado's approach to expansion project

Criticism from the Spanish architectural world as the museum launches huge open competition for its new extension