Mr Libeskind, who designed the Jewish Museum in Berlin has described his collaboration with Childs as a "forced marriage", but it was all smiles at the news conference.

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Housed in the exquisite Bryce-Frick mansion (built in 1900 by General Lloyd Bryce and purchased by Childs Frick, son of steel magnate Henry Clay Frick, 19 years later), the charming museum hosts a variety of changing exhibitions featuring the likes of Catalan painter and sculptor Joan Miro and African-American painter Jean-Michel Basquiat.

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