World War I provided new business opportunities for the family, but the empire was hit hard by the financial crisis of 1929, particularly in Vienna. The family's holdings in Austria were brought under Nazi control in the late 1930s. The Rothschild Family's interests recovered by the 1960s and they began working on expansion to the United States. The new focus allowed for the branding of London's Rothschild Inc. and N M Rothschild & Sons. As of today, the family's banks employ close to 3,000 people globally. Here is a photo of the family's British castle, known as Waddesdon Manor: