Why museums hide masterpieces away

The Tate shows about 20% of its permanent collection. The Louvre shows 8%, the Guggenheim a lowly 3% and the Berlinische Galerie – a Berlin museum whose mandate is to show, preserve and collect art made in the city – 2% of its holdings. These include approximately 6,000 sculptures and paintings, 80,000 photographs, and 15,000 prints by artists including George Grosz and Hannah Höch.

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