Von Mandl showed Prince William and Kate Middleton around one of his wineries in 2016.

The visit was a part of the Duke and Duchess of Cambridge's 2016 Commonwealth tour, according to Bloomberg.

Mission Hill is a popular tourist destination in British Columbia, according to Business in Vancouver. Its restaurant was named one of the top five winery restaurants in the world by Travel + Leisure in 2009.

The magazine called Mission Hill "one of the most impressive wineries anywhere," citing the estate's amphitheater, 12-story bell tower, cooking classes, and the Chagall tapestry in the private dining room.

The property is worth $35 million, and von Mandl has invested over $26 million in it, according to Travel + Leisure.