In recent years the IMA has begun to focus on developing its contemporary art collection,[73] which includes works such as Two White Dots in the Air by Alexander Calder[2] and Light and Space III, a permanent installation by Robert Irwin located in the Pulliam Great Hall.[74] Since 2007 the museum has featured site-specific contemporary installations in the Efroymson Pavilion, rotating the temporary works every six months.[75] The Efroymson Pavilion has featured works by artists such as William Lamson, Ball-Nogues Studio, Orly Genger, and Heather Rowe to name a few.