Real estate company Kemper Development has completed the $185m expansion at the 20-year-old, 733-room Hyatt Regency Bellevue in Washington, US.

The aaa four-diamond Hyatt Regency Bellevue comprising of the current Cascade Tower and the newly opened Olympic Tower is the largest hotel in Bellevue, covering more than 60,000ft² of premium event space.

The 17,745ft² Grand Ballroom of the hotel features soaring 23ft ceilings.