The Royal Liver Building, in Liverpool, has been sold to Luxembourg-based company, Corestate Capital, for £48 million.
The Grade I listed building makes up one of the city's "three graces", alongside the Cunard Building and Port of Liverpool Building.
The property, home to the two famous Liver Birds, extends to more than 330,000 sq ft of office and events space. It is also occupied by ITV, HSBC, Princes Foods, Mott MacDonald and Grant Thornton.
The building was owned by the Royal London Mutual Insurance Society but was put up for sale for £40 million in October 2016.