Wilhelmina became managing director of Grand Hôtel in Stockholm in 1902 at the age of 53. Her most famous project was to build the Grand Hôtel Royal including the immense Winter Garden in the form of an "annex" to the original hotel building. She got the idea for Royal during her first trip to Paris. (Grand Hôtel Royal was the venue for the Nobel Banquet for many years, and was moved eventually to the Stockholm City Hall, where it is held in December each year). The Winter Garden has a ceiling height of 15 m (49 ft) and can accommodate 800 dinner guests. It remains even today an important cornerstone of what the Hotel can offer.
