KPMG's new Leeds office in Sovereign Square has been officially opened by Prince Andrew after the Duke of York toured the building and spent time with employees, clients and local school pupils.
Watched by hundreds of KPMG partners, staff, members of the business community and public sector figures, the duke unveiled a commemorative plaque and spoke of his pleasure to be celebrating the investment in the city.
"I am impressed with this particular building as it is right for everyone to use together, in an efficient manner, communicating with one another, which raises productivity," said Prince Andrew.
Chris Hearld, KPMG's North region chairman, said: "To welcome HRH The Duke of York to our new home here in the heart of Yorkshire was a momentous occasion for me and my 800 colleagues based in this superb building.
"We are thrilled that he was able to join us for an official opening ceremony to celebrate this milestone in our Yorkshire history."
Hearld added: "The planning that went into this building is already paying off, triggering changes to the way our team communicates and collaborates with one another.
"There is increasing emphasis on this in the context of the diverse range of areas in which we now work, with data analysis, cyber security advice and customer experience management joining our more established audit, tax and advisory services.
"In addition to the building's design; breakout areas, project rooms and hot desking help to encourage and facilitate cross discipline working. This benefits our clients, as does the spacious top floor client suite and informal meeting facility in Hej, our own coffee shop."
KPMG moved into 1 Sovereign Square on 2 November 2015. The 61,000 sq ft building was developed exclusively for the firm.