Spend the day exploring the open-to-the public sections, such as the extravagant and glamorous State Apartments and the Drawings Gallery, with its ever-changing art exhibitions.

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Konrad Oberhuber, curator of drawings at the National Gallery of Art in Washington, D.

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And having already bought out Colnaghi's share of the drawings, he took nearly all the gallery's stock with him.

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In early July a scholarly study-day at the gallery kicks off a master paintings and drawings week during which London's dealers show off their treasures.

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Johnson bought 222 pieces, including 68 drawings, paintings, prints and sculptures from the original gallery.

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The permanent collection of this six-floor gallery includes thousands of Warhol's paintings, drawings, films, sculptures, prints and more, plus the artist's archives.

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In one of the most elaborate displays, the Gagosian Gallery added a carpeted side room to its booth to showcase a pair of new pencil drawings of trees by Zeng Fanzhi, a Chinese painter who is better known for his colorful portraits of men wearing white masks.

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