Swiss Life, Switzerland's largest property owner, and UBS, the nation's biggest bank, did not give the sales price for the five properties including the building with the five-star Widder Hotel. They also did not disclose the properties' footprint.

IHAG, a privately held holding company that also owns a stake in Swiss aircraft maker Pilatus, plans to take over operation of the hotel and restaurants.

(Reporting by John Miller, editing by Brenna Hughes Neghaiwi)