The Harvard Art Museum is one of the world's leading arts institutions, comprising three museums (Fogg Museum, Busch-Reisinger Museum, Arthur M. Sackler Museum) and four research centers (Straus Center for Conservation and Technical Studies, Center for the Technical Study of Modern Art, Harvard Art Museum Archives, Archaeological Exploration of Sardis, Turkey). The Harvard Art Museum is distinguished by the range and depth of its collection, its groundbreaking exhibitions, and the original research of its staff. The collection consists of more than 260,000 objects in all media, ranges in date from antiquity to the present, and comes from Europe, North America, North Africa, the Middle East, South Asia, East Asia, and Southeast Asia. As an integral part of Harvard and the community, the three art museums and four research centers serve as resources for students, scholars, and visitors. For more than a century, the Harvard Art Museum has been the nation's premier training ground for museum professionals and scholars and is renowned for its seminal role in the development of the discipline of art history in this country. In June 2008, the Harvard Art Museum's building at 32 Quincy Street, formerly the home of the Fogg and Busch-Reisinger Museums, closed for a major renovation. During this renovation, the Sackler Museum at 485 Broadway remains open and has been reinstalled with some of the finest works representing the collections of all three museums. When complete, the renovated historic building on Quincy Street will unite the three museums in a single state-of-the-art facility designed by architect Renzo Piano.